Project acronym 2-3-AUT
Project Surfaces, 3-manifolds and automorphism groups
Researcher (PI) Nathalie Wahl
Host Institution (HI) KOBENHAVNS UNIVERSITET
Call Details Starting Grant (StG), PE1, ERC-2009-StG
Summary The scientific goal of the proposal is to answer central questions related to diffeomorphism groups of manifolds of dimension 2 and 3, and to their deformation invariant analogs, the mapping class groups. While the classification of surfaces has been known for more than a century, their automorphism groups have yet to be fully understood. Even less is known about diffeomorphisms of 3-manifolds despite much interest, and the objects here have only been classified recently, by the breakthrough work of Perelman on the Poincar\'e and geometrization conjectures. In dimension 2, I will focus on the relationship between mapping class groups and topological conformal field theories, with applications to Hochschild homology. In dimension 3, I propose to compute the stable homology of classifying spaces of diffeomorphism groups and mapping class groups, as well as study the homotopy type of the space of diffeomorphisms. I propose moreover to establish homological stability theorems in the wider context of automorphism groups and more general families of groups. The project combines breakthrough methods from homotopy theory with methods from differential and geometric topology. The research team will consist of 3 PhD students, and 4 postdocs, which I will lead.
Summary
The scientific goal of the proposal is to answer central questions related to diffeomorphism groups of manifolds of dimension 2 and 3, and to their deformation invariant analogs, the mapping class groups. While the classification of surfaces has been known for more than a century, their automorphism groups have yet to be fully understood. Even less is known about diffeomorphisms of 3-manifolds despite much interest, and the objects here have only been classified recently, by the breakthrough work of Perelman on the Poincar\'e and geometrization conjectures. In dimension 2, I will focus on the relationship between mapping class groups and topological conformal field theories, with applications to Hochschild homology. In dimension 3, I propose to compute the stable homology of classifying spaces of diffeomorphism groups and mapping class groups, as well as study the homotopy type of the space of diffeomorphisms. I propose moreover to establish homological stability theorems in the wider context of automorphism groups and more general families of groups. The project combines breakthrough methods from homotopy theory with methods from differential and geometric topology. The research team will consist of 3 PhD students, and 4 postdocs, which I will lead.
Max ERC Funding
724 992 €
Duration
Start date: 2009-11-01, End date: 2014-10-31
Project acronym BIOMEMOS
Project Higher order structure and function of biomembranes
Researcher (PI) Poul Nissen
Host Institution (HI) AARHUS UNIVERSITET
Call Details Advanced Grant (AdG), LS1, ERC-2009-AdG
Summary The biomembrane is a prerequisite of life. It enables the cell to maintain a controlled environment and to establish electrochemical gradients as rapidly accessible energy stores. Biomembranes also provide scaffold for organisation and spatial definition of signal transmission in the cell. Crystal structures of membrane proteins are determined with an increasing pace. Along with functional studies integral studies of individual membrane proteins are now widely implemented. The BIOMEMOS proposal goes a step further and approaches the function of the biomembrane at the higher level of membrane protein complexes. Through a combination of X-ray crystallography, electrophysiology, general biochemistry, biophysics and bioinformatics and including also the application of single-particle cryo-EM and small-angle X-ray scattering, the structure and function of membrane protein complexes of key importance in life will be investigated. The specific targets for investigation in this proposal include: 1) higher-order complexes of P-type ATPase pumps such as signalling complexes of Na+,K+-ATPase, and 2) development of methods for structural studies of membrane protein complexes Based on my unique track record in structural studies of large, difficult structures (ribosomes and membrane proteins) in the setting of a thriving research community in structural biology and biomembrane research in Aarhus provides a critical momentum for a long-term activity. The activity will take advantage of the new possibilities offered by synchrotron sources in Europe. Furthermore, a single-particle cryo-EM research group formed on my initiative in Aarhus, and a well-established small-angle X-ray scattering community provides for an optimal setting through multiple cues in structural biology and functional studies
Summary
The biomembrane is a prerequisite of life. It enables the cell to maintain a controlled environment and to establish electrochemical gradients as rapidly accessible energy stores. Biomembranes also provide scaffold for organisation and spatial definition of signal transmission in the cell. Crystal structures of membrane proteins are determined with an increasing pace. Along with functional studies integral studies of individual membrane proteins are now widely implemented. The BIOMEMOS proposal goes a step further and approaches the function of the biomembrane at the higher level of membrane protein complexes. Through a combination of X-ray crystallography, electrophysiology, general biochemistry, biophysics and bioinformatics and including also the application of single-particle cryo-EM and small-angle X-ray scattering, the structure and function of membrane protein complexes of key importance in life will be investigated. The specific targets for investigation in this proposal include: 1) higher-order complexes of P-type ATPase pumps such as signalling complexes of Na+,K+-ATPase, and 2) development of methods for structural studies of membrane protein complexes Based on my unique track record in structural studies of large, difficult structures (ribosomes and membrane proteins) in the setting of a thriving research community in structural biology and biomembrane research in Aarhus provides a critical momentum for a long-term activity. The activity will take advantage of the new possibilities offered by synchrotron sources in Europe. Furthermore, a single-particle cryo-EM research group formed on my initiative in Aarhus, and a well-established small-angle X-ray scattering community provides for an optimal setting through multiple cues in structural biology and functional studies
Max ERC Funding
2 444 180 €
Duration
Start date: 2010-04-01, End date: 2015-03-31
Project acronym CHILIC
Project Child health intervention interactions in low-income countries
Researcher (PI) Christine Benn
Host Institution (HI) STATENS SERUM INSTITUT
Call Details Starting Grant (StG), LS7, ERC-2009-StG
Summary Vitamin A supplementation (VAS) and vaccines are the most powerful tools to reduce child mortality in low-income countries. However, we may not use these interventions optimally because we disregard that the interventions may have immunomodulatory effects which differ for boys and girls and which may interact with the effects of other interventions. I have proposed the hypothesis that VAS and vaccines interact. This hypothesis is supported by randomised and observational studies showing that the combination of VAS and DTP may be harmful. I have furthermore proposed that VAS has sex-differential effects. VAS seems beneficial for boys but may not carry any benefits for girls. These findings challenge the current understanding that VAS and vaccines have only targeted effects and can be given together without considering interactions. This is of outmost importance for policy makers. The global trend is to combine health interventions for logistic reasons. My research suggests that this may not always be a good idea. Furthermore, the concept of sex-differential response to our common health interventions opens up for a completely new understanding of the immunology of the two sexes and may imply that we need to treat the two sexes differently in order to treat them optimally possibly also in high-income countries. In the present proposal I outline a series of inter-disciplinary epidemiological and immunological studies, which will serve to determine the overall and sex-differential effects of VAS and vaccines, the mechanisms behind these effects, and the basis for the immunological difference between boys and girls. If my hypotheses are true we can use the existing tools in a more optimal way to reduce child mortality without increasing costs. Thus, the results could lead to shifts in policy as well as paradigms.
Summary
Vitamin A supplementation (VAS) and vaccines are the most powerful tools to reduce child mortality in low-income countries. However, we may not use these interventions optimally because we disregard that the interventions may have immunomodulatory effects which differ for boys and girls and which may interact with the effects of other interventions. I have proposed the hypothesis that VAS and vaccines interact. This hypothesis is supported by randomised and observational studies showing that the combination of VAS and DTP may be harmful. I have furthermore proposed that VAS has sex-differential effects. VAS seems beneficial for boys but may not carry any benefits for girls. These findings challenge the current understanding that VAS and vaccines have only targeted effects and can be given together without considering interactions. This is of outmost importance for policy makers. The global trend is to combine health interventions for logistic reasons. My research suggests that this may not always be a good idea. Furthermore, the concept of sex-differential response to our common health interventions opens up for a completely new understanding of the immunology of the two sexes and may imply that we need to treat the two sexes differently in order to treat them optimally possibly also in high-income countries. In the present proposal I outline a series of inter-disciplinary epidemiological and immunological studies, which will serve to determine the overall and sex-differential effects of VAS and vaccines, the mechanisms behind these effects, and the basis for the immunological difference between boys and girls. If my hypotheses are true we can use the existing tools in a more optimal way to reduce child mortality without increasing costs. Thus, the results could lead to shifts in policy as well as paradigms.
Max ERC Funding
1 686 043 €
Duration
Start date: 2010-01-01, End date: 2014-12-31
Project acronym DEFACT
Project DNA repair factories how cells do biochemistry
Researcher (PI) Michael Lisby
Host Institution (HI) KOBENHAVNS UNIVERSITET
Call Details Starting Grant (StG), LS1, ERC-2009-StG
Summary The integrity of a cell's genome is constantly challenged by DNA lesions such as base modifications and DNA strand breaks. A single double-strand break is lethal if unrepaired and may lead to loss-of-heterozygosity, mutations, deletions, genomic rearrangements and chromosome loss if repaired improperly. Such genetic alterations are the main cause of cancer and other genetic diseases. Homologous recombination is an error-free pathway for repairing DNA lesions such as single- and double-strand breaks, and for the restart of collapsed replication forks. This pathway is catalyzed by giga-Dalton protein complexes consisting of dozens of different proteins. These DNA repair factories are able to catalyze complex, multi-step biochemical processes, which have so far failed reconstitution in vitro. The aim of this project is to establish an understanding of how cells catalyze complex biochemical processes such as homologous recombination in vivo. To reach this goal, we will seek to define the complete set of RNA and protein components of DNA repair factories using a combination of genetic, cell biological and biochemical approaches in the yeast Saccharomyces cerevisiae. Further, we will characterize the molecular architecture of DNA repair factories using fluorescence resonance energy transfer (FRET) and by applying systematic hybrid loss-of-heterozygosity (LOH) to physical interactions among DNA repair proteins. Key findings will be extended to metazoans using the chicken DT40 model system. My aim is to determine the fundamental molecular principles that govern protein factories in living cells. As such, our results are likely to be directly relevant to other protein factories such as DNA replication factories, PML bodies, nuclear pore complexes and transcription clusters.
Summary
The integrity of a cell's genome is constantly challenged by DNA lesions such as base modifications and DNA strand breaks. A single double-strand break is lethal if unrepaired and may lead to loss-of-heterozygosity, mutations, deletions, genomic rearrangements and chromosome loss if repaired improperly. Such genetic alterations are the main cause of cancer and other genetic diseases. Homologous recombination is an error-free pathway for repairing DNA lesions such as single- and double-strand breaks, and for the restart of collapsed replication forks. This pathway is catalyzed by giga-Dalton protein complexes consisting of dozens of different proteins. These DNA repair factories are able to catalyze complex, multi-step biochemical processes, which have so far failed reconstitution in vitro. The aim of this project is to establish an understanding of how cells catalyze complex biochemical processes such as homologous recombination in vivo. To reach this goal, we will seek to define the complete set of RNA and protein components of DNA repair factories using a combination of genetic, cell biological and biochemical approaches in the yeast Saccharomyces cerevisiae. Further, we will characterize the molecular architecture of DNA repair factories using fluorescence resonance energy transfer (FRET) and by applying systematic hybrid loss-of-heterozygosity (LOH) to physical interactions among DNA repair proteins. Key findings will be extended to metazoans using the chicken DT40 model system. My aim is to determine the fundamental molecular principles that govern protein factories in living cells. As such, our results are likely to be directly relevant to other protein factories such as DNA replication factories, PML bodies, nuclear pore complexes and transcription clusters.
Max ERC Funding
1 700 030 €
Duration
Start date: 2009-12-01, End date: 2014-11-30
Project acronym LONGEVITYBYCAUSE
Project Cause of Death Contribution to Longevity: Modeling Time Trends
Researcher (PI) Vladimir Canudas Romo
Host Institution (HI) SYDDANSK UNIVERSITET
Call Details Starting Grant (StG), SH3, ERC-2009-StG
Summary Since the mid-nineteen century life expectancy in developed countries has doubled, increasing from levels around 40 years to above 80 years. This research project is motivated by the need to further explore how societies have achieved the current levels of longevity, in terms of life expectancy and modal age at death. To achieve this, age-patterns and time-trends in cause of death contribution to longevity are assessed. This historical analysis is carried out in fifty developed and developing countries/areas. It is expected that the cause of death contribution to the advancement of longevity is country/region specific. However, the hypothesis to be tested is that there are common cause-specific time-trends across countries which can be described by a model of cause of death contribution to longevity. Several purposes for such a model can be listed: it will allow us to study expected future mortality directions in developed nations that are currently still facing high levels of some particular causes of death, e.g. the Netherlands and United States. It could also help investigating the retrocession in mortality observed in some transitional countries/areas, particularly in Eastern Europe. Finally, the accelerated epidemiological transition in developing countries is compared to the slower trend in the developed world at earlier times, model results versus observed cause-contribution. The interest in the latter comparison is to foresee the increase in the prevalence of chronic disease in low-income countries predicted by the WHO and the World Bank. Furthermore, one in every three countries in the world has adequate cause-specific mortality data. The proposed model could facilitate estimating the current cause of death status in developing countries. This project addresses a significant question concerning the mechanisms (age and cause of death) that direct reductions in mortality.
Summary
Since the mid-nineteen century life expectancy in developed countries has doubled, increasing from levels around 40 years to above 80 years. This research project is motivated by the need to further explore how societies have achieved the current levels of longevity, in terms of life expectancy and modal age at death. To achieve this, age-patterns and time-trends in cause of death contribution to longevity are assessed. This historical analysis is carried out in fifty developed and developing countries/areas. It is expected that the cause of death contribution to the advancement of longevity is country/region specific. However, the hypothesis to be tested is that there are common cause-specific time-trends across countries which can be described by a model of cause of death contribution to longevity. Several purposes for such a model can be listed: it will allow us to study expected future mortality directions in developed nations that are currently still facing high levels of some particular causes of death, e.g. the Netherlands and United States. It could also help investigating the retrocession in mortality observed in some transitional countries/areas, particularly in Eastern Europe. Finally, the accelerated epidemiological transition in developing countries is compared to the slower trend in the developed world at earlier times, model results versus observed cause-contribution. The interest in the latter comparison is to foresee the increase in the prevalence of chronic disease in low-income countries predicted by the WHO and the World Bank. Furthermore, one in every three countries in the world has adequate cause-specific mortality data. The proposed model could facilitate estimating the current cause of death status in developing countries. This project addresses a significant question concerning the mechanisms (age and cause of death) that direct reductions in mortality.
Max ERC Funding
300 380 €
Duration
Start date: 2010-05-01, End date: 2015-04-30
Project acronym MINDREHAB
Project Consciousness In basic Science And Neurorehabilitation
Researcher (PI) Morten Overgaard
Host Institution (HI) AARHUS UNIVERSITET
Call Details Starting Grant (StG), SH4, ERC-2009-StG
Summary This project studies the topic of human consciousness from a multidisciplinary perspective. Human consciousness can be defined as the inner subjective experience of mental states such as perceptions, judgments, thoughts, intentions to act, feelings or desires. These experiences are to be described from a subjective, phenomenal first-person account. On the other hand, cognitive neurosciences explore the neural correlates with respect to brain topology and brain dynamics from an objective third-person account.
Despite a great interest in consciousness among cognitive neuroscientists, there are yet no general agreement on definitions or models, and no attempts to draw conclusions from the existing body of work to make progress in the treatment of patients. While it is generally the case that research in cognitive neuroscience has a minimal influence on clinical work in neurorehabilitation, this is very much the case in consciousness studies. Here, so far, there is no direct connection to clinical practice
MindRehab will make use of an integrated approach to find new ways to understand cognitive dysfunctions and to actually rehabilitate patients with cognitive problems after brain injury. This integrated approach, using consciousness studies to create progress in a clinical area, is novel and does not exist as an explicit goal for any other research group in the world. The objective of MindRehab is to integrate three aspects: Philosophy and basic research on consciousness, and clinical work in neurorehabilitation. Furthermore, the objective is to realize a number of research projects leading to novel contributions at the frontier of all three domains. However, contrary to all other current research projects in this field, the emphasis is put on the latter the clinical work.
Summary
This project studies the topic of human consciousness from a multidisciplinary perspective. Human consciousness can be defined as the inner subjective experience of mental states such as perceptions, judgments, thoughts, intentions to act, feelings or desires. These experiences are to be described from a subjective, phenomenal first-person account. On the other hand, cognitive neurosciences explore the neural correlates with respect to brain topology and brain dynamics from an objective third-person account.
Despite a great interest in consciousness among cognitive neuroscientists, there are yet no general agreement on definitions or models, and no attempts to draw conclusions from the existing body of work to make progress in the treatment of patients. While it is generally the case that research in cognitive neuroscience has a minimal influence on clinical work in neurorehabilitation, this is very much the case in consciousness studies. Here, so far, there is no direct connection to clinical practice
MindRehab will make use of an integrated approach to find new ways to understand cognitive dysfunctions and to actually rehabilitate patients with cognitive problems after brain injury. This integrated approach, using consciousness studies to create progress in a clinical area, is novel and does not exist as an explicit goal for any other research group in the world. The objective of MindRehab is to integrate three aspects: Philosophy and basic research on consciousness, and clinical work in neurorehabilitation. Furthermore, the objective is to realize a number of research projects leading to novel contributions at the frontier of all three domains. However, contrary to all other current research projects in this field, the emphasis is put on the latter the clinical work.
Max ERC Funding
1 641 232 €
Duration
Start date: 2010-06-01, End date: 2015-05-31
Project acronym OAFPG
Project Operator Algebras, Free Probability, and Groups
Researcher (PI) Uffe Valentin Haagerup
Host Institution (HI) KOBENHAVNS UNIVERSITET
Call Details Advanced Grant (AdG), PE1, ERC-2009-AdG
Summary Starting with Voiculescu's pioneering work on free probability from 1983, there has for more than 25 years been a strong development in mathematical research on the interrelations between operator algebra theory, probability theory and group theory. The PI has over the last 10 years made several important contributions to this development. The aim of the project is to target some of the main open problems in this area, such as the isomorphism problem for free group factors and Connes' embedding problem for finite factors. The project will take place at University of Copenhagen in close contact with its well established group in operator algebras.
Summary
Starting with Voiculescu's pioneering work on free probability from 1983, there has for more than 25 years been a strong development in mathematical research on the interrelations between operator algebra theory, probability theory and group theory. The PI has over the last 10 years made several important contributions to this development. The aim of the project is to target some of the main open problems in this area, such as the isomorphism problem for free group factors and Connes' embedding problem for finite factors. The project will take place at University of Copenhagen in close contact with its well established group in operator algebras.
Max ERC Funding
1 612 171 €
Duration
Start date: 2010-01-01, End date: 2014-12-31
Project acronym OXIDESYNERGY
Project Understanding the Atomic Scale Synergies of Catalytically Active Nanoclusters on Metal Oxide Surfaces
Researcher (PI) Jeppe Vang Lauritsen
Host Institution (HI) AARHUS UNIVERSITET
Call Details Starting Grant (StG), PE4, ERC-2009-StG
Summary The research theme concerns the application of new experimental methods for atomic-scale characterization of model catalysts based on insulating metal oxides with the goal of exploring the potential for designing new and efficient heterogeneous catalysts by enhanced control of the catalyst structure at the atomic level. This objective will be achieved by a carefully integrated sequence of synthesis, characterization, and reactivity measurements of model catalysts based on insulating metal oxides. The project aims in detail at resolving some pertinent support synergies and size-effects, which have been revealed in catalytic systems. A core challenge and advance, which sets the project apart from previous research, is the application of high-resolution non contact Atomic Force Microscopy (nc-AFM), which is the only available tool that can resolve the atomic structure of insulator surfaces and the morphology of supported nanoclusters. I will combine my proven experience with atom-resolved imaging using nc-AFM with novel methods for synthesizing and analyzing model catalysts, to provide groundbreaking new atomistic insight. A crucial aspect will be the ability to relate nc-AFM observations to actual catalytic properties, and this will be achieved by using complementary surface spectroscopies and reaction measurements performed at real high pressure conditions. I firmly believe that this research strategy can provide the key insight to a significantly better understanding of the numerous catalytic systems based on insulating metal oxides, and this project will enable me to set up a unique world-class experimental facility for such studies.
Summary
The research theme concerns the application of new experimental methods for atomic-scale characterization of model catalysts based on insulating metal oxides with the goal of exploring the potential for designing new and efficient heterogeneous catalysts by enhanced control of the catalyst structure at the atomic level. This objective will be achieved by a carefully integrated sequence of synthesis, characterization, and reactivity measurements of model catalysts based on insulating metal oxides. The project aims in detail at resolving some pertinent support synergies and size-effects, which have been revealed in catalytic systems. A core challenge and advance, which sets the project apart from previous research, is the application of high-resolution non contact Atomic Force Microscopy (nc-AFM), which is the only available tool that can resolve the atomic structure of insulator surfaces and the morphology of supported nanoclusters. I will combine my proven experience with atom-resolved imaging using nc-AFM with novel methods for synthesizing and analyzing model catalysts, to provide groundbreaking new atomistic insight. A crucial aspect will be the ability to relate nc-AFM observations to actual catalytic properties, and this will be achieved by using complementary surface spectroscopies and reaction measurements performed at real high pressure conditions. I firmly believe that this research strategy can provide the key insight to a significantly better understanding of the numerous catalytic systems based on insulating metal oxides, and this project will enable me to set up a unique world-class experimental facility for such studies.
Max ERC Funding
1 050 000 €
Duration
Start date: 2009-10-01, End date: 2014-09-30
Project acronym SOCRATES
Project Serial Optical Communications for Advanced Terabit Ethernet Systems
Researcher (PI) Leif Katsuo Oxenløwe
Host Institution (HI) DANMARKS TEKNISKE UNIVERSITET
Call Details Starting Grant (StG), PE7, ERC-2009-StG
Summary The last two decades has seen an explosion in telecommunication bandwidth, a trend which has never ceased. Another current trend is the growing concern for the environmental footprint humankind is leaving due to various industries. The Internet traffic grows roughly by 60% per year, and internet servers today consume about 2% of the total global electric power consumption corresponding to a CO2 emission approaching 1% of the total emission caused by human beings. These trends have made it very clear that it is imperative to develop new technologies that can accommodate for the ever growing bandwidth demand and reduce power consumption. The key issue for modern telecommunication engineers and designers is no longer cost per bit, but power per bit. Using optical methods for carrying data and processing the data, without opto-to-electrical conversion, so-called all-optical methods, may help in this respect. This project will aim at developing an all-optical power-efficient communication scenario based on serial optical communications. In serial communications, fewer components will in general be used, and with ultra-short pulses, very high bit rates will become available. Historically, increases in the serial data rate have lead to cost savings, due to reduced complexity in management, reduced power consumption and a reduced number of components. We believe this will hold true, and will explore the fundamental physical limits of serial communications to reach the ultimate serial bit rate, and develop network scenarios to fully take advantage of the serial nature of the data, whilst maintaining a focus on limiting the power consumption. In particular we want to design network scenarios for optical serial multi-Tbit/s data and additionally build a 1 Tbit/s optical Ethernet scenario. We will develop stable ultra-fast switches , and mature them for a variety of functionalities, eventually leading to a validation of ultra-high-speed serial optical communication systems.
Summary
The last two decades has seen an explosion in telecommunication bandwidth, a trend which has never ceased. Another current trend is the growing concern for the environmental footprint humankind is leaving due to various industries. The Internet traffic grows roughly by 60% per year, and internet servers today consume about 2% of the total global electric power consumption corresponding to a CO2 emission approaching 1% of the total emission caused by human beings. These trends have made it very clear that it is imperative to develop new technologies that can accommodate for the ever growing bandwidth demand and reduce power consumption. The key issue for modern telecommunication engineers and designers is no longer cost per bit, but power per bit. Using optical methods for carrying data and processing the data, without opto-to-electrical conversion, so-called all-optical methods, may help in this respect. This project will aim at developing an all-optical power-efficient communication scenario based on serial optical communications. In serial communications, fewer components will in general be used, and with ultra-short pulses, very high bit rates will become available. Historically, increases in the serial data rate have lead to cost savings, due to reduced complexity in management, reduced power consumption and a reduced number of components. We believe this will hold true, and will explore the fundamental physical limits of serial communications to reach the ultimate serial bit rate, and develop network scenarios to fully take advantage of the serial nature of the data, whilst maintaining a focus on limiting the power consumption. In particular we want to design network scenarios for optical serial multi-Tbit/s data and additionally build a 1 Tbit/s optical Ethernet scenario. We will develop stable ultra-fast switches , and mature them for a variety of functionalities, eventually leading to a validation of ultra-high-speed serial optical communication systems.
Max ERC Funding
1 518 387 €
Duration
Start date: 2009-09-01, End date: 2014-08-31
Project acronym WATERUNDERTHEICE
Project Where is the water under the Greenland ice sheet?
Researcher (PI) Dorthe Dahl-Jensen
Host Institution (HI) KOBENHAVNS UNIVERSITET
Call Details Advanced Grant (AdG), PE10, ERC-2009-AdG
Summary Recent analysis of radar-depth sounder data has shown that many areas of the Greenland ice sheet have melt water under the base. The extent of the wet base and distribution of melt water are poorly known. Also lakes under the ice have not been discovered in contrast with those in Antarctica. The effect of the water beneath the ice, however, is well documented: it lubricates the bed and removes the friction between the basal ice and underlying bedrock. The ice with a wet bed flows faster, reacts rapidly to changes in climate and the basal-melt water contributes to the fresh-water supply to the ocean from the Greenland ice sheet. The primary objectives of the project are to map melt water extent of the Greenland ice sheet and its impact by tracing internal layers and analyzing bedrock returns from airborne radio-echo sounding data, and use mapping results in conjunction with ice-sheet and hydrostatic models for the movement of the basal water to predict the ice-sheet s response to climate change. The information derived from deep ice-cores that reach the bed will be used to constrain models. We will also study the basal material (dust, DNA and microbiological material) and bedrock properties from the deep-ice core sites. This will add a further dimension to the study and provide opportunities to look for life under the ice and constrain the age of the Greenland ice sheet. The proposed research is a high risk project because of the difficulty in accessing basal conditions under 3-km of ice with a potential for high payoff science. The team will consist of scientists and engineers with expertise in the palaeoclimate, radar sounding and signal processing, and ice-sheet models.
Summary
Recent analysis of radar-depth sounder data has shown that many areas of the Greenland ice sheet have melt water under the base. The extent of the wet base and distribution of melt water are poorly known. Also lakes under the ice have not been discovered in contrast with those in Antarctica. The effect of the water beneath the ice, however, is well documented: it lubricates the bed and removes the friction between the basal ice and underlying bedrock. The ice with a wet bed flows faster, reacts rapidly to changes in climate and the basal-melt water contributes to the fresh-water supply to the ocean from the Greenland ice sheet. The primary objectives of the project are to map melt water extent of the Greenland ice sheet and its impact by tracing internal layers and analyzing bedrock returns from airborne radio-echo sounding data, and use mapping results in conjunction with ice-sheet and hydrostatic models for the movement of the basal water to predict the ice-sheet s response to climate change. The information derived from deep ice-cores that reach the bed will be used to constrain models. We will also study the basal material (dust, DNA and microbiological material) and bedrock properties from the deep-ice core sites. This will add a further dimension to the study and provide opportunities to look for life under the ice and constrain the age of the Greenland ice sheet. The proposed research is a high risk project because of the difficulty in accessing basal conditions under 3-km of ice with a potential for high payoff science. The team will consist of scientists and engineers with expertise in the palaeoclimate, radar sounding and signal processing, and ice-sheet models.
Max ERC Funding
2 499 999 €
Duration
Start date: 2010-01-01, End date: 2015-12-31
