Jan Eichler
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View article: Linking crystallographic orientation and ice stream dynamics: evidence from the EastGRIP ice core
Linking crystallographic orientation and ice stream dynamics: evidence from the EastGRIP ice core Open
A better understanding of glacial ice flow and how it is influenced by internal deformation is required to improve the projections of future sea level rise under a warming climate. Large ice streams, the main contributors to solid-ice disc…
View article: EastGRIP ice core reveals the exceptional evolution of crystallographic preferred orientation throughout the Northeast Greenland Ice Stream
EastGRIP ice core reveals the exceptional evolution of crystallographic preferred orientation throughout the Northeast Greenland Ice Stream Open
A better understanding of glacial ice flow and how it is influenced by internal deformation is required to improve the projections of future sea-level rise in a warming climate. Especially large ice streams, the main contributors to solid …
View article: Palestine in a Vicious Circle of Violence, Wars and Terror (1948–2023)
Palestine in a Vicious Circle of Violence, Wars and Terror (1948–2023) Open
This article deals with one of the most explosive areas of the world today, which is the Near and Middle East (NMEA) and especially the territory of historical Palestine, where the Israeli-Palestinian conflict (IPC) has been going on for a…
View article: Experimental modelling of the growth of tubular ice brinicles from brine flows under sea ice
Experimental modelling of the growth of tubular ice brinicles from brine flows under sea ice Open
We present laboratory experiments on the growth of a tubular ice structure surrounding a plume of cold brine that descends under gravity into water with a higher freezing point. Brinicles are geological analogues of these structures found …
View article: Folded ice in the upper North East Greenland Ice Stream reveal timing of the onset of streaming
Folded ice in the upper North East Greenland Ice Stream reveal timing of the onset of streaming Open
Only a few localised ice streams drain most ice from the Greenland Ice Sheet. Thus, understanding ice stream behaviour and their temporal variability is crucially important to predict future sea-level change. The interior trunk of the 700 …
View article: Comment on tc-2023-100
Comment on tc-2023-100 Open
Abstract. We present laboratory experiments on the growth of a tubular ice structure surrounding a plume of cold brine that descends under gravity into water with a higher freezing point. Brinicles are geological analogues of these structu…
View article: Shear margins in upper half of Northeast Greenland Ice Stream were established two millennia ago
Shear margins in upper half of Northeast Greenland Ice Stream were established two millennia ago Open
Only a few localised ice streams drain most of the ice from the Greenland Ice Sheet. Thus, understanding ice stream behaviour and its temporal variability is crucially important to predict future sea-level change. The interior trunk of the…
View article: Reply on RC1
Reply on RC1 Open
Abstract. We present laboratory experiments on the growth of a tubular ice structure surrounding a plume of cold brine that descends under gravity into water with a higher freezing point. Brinicles are geological analogues of these structu…
View article: Experimental modelling of the growth of tubular ice brinicles from brine flows under sea ice
Experimental modelling of the growth of tubular ice brinicles from brine flows under sea ice Open
We present laboratory experiments on the growth of a tubular ice structure surrounding a plume of cold brine that descends under gravity into water with a higher freezing point. Brinicles are geological analogues of these structures found …
View article: Characterisation of multi-scale deformation in NEGIS from microstructure analysis of the EastGRIP ice core
Characterisation of multi-scale deformation in NEGIS from microstructure analysis of the EastGRIP ice core Open
We present the results from a microstructural analysis of more than 1000 thin section samples from the East Greenland Ice Core Project (EastGRIP) ice core that is being drilled at the onset of the fast-flowing North East Greenland Ice Stre…
View article: Integrating Raman spectroscopy and LA-ICP-MS 2D imaging to decipher the localisation and chemistry of impurities on the micro-scale in Greenland ice: Consistencies and open question
Integrating Raman spectroscopy and LA-ICP-MS 2D imaging to decipher the localisation and chemistry of impurities on the micro-scale in Greenland ice: Consistencies and open question Open
<p>Impurities in polar ice play, among others, a crucial role as a proxy for the paleoclimate while at the same time impacting the internal deformation of ice on the micro-scale. In particular, solid and dissolved impurities can impa…
View article: Microstructure, micro-inclusions, and mineralogy along the EGRIP (East Greenland Ice Core Project) ice core – Part 2: Implications for palaeo-mineralogy
Microstructure, micro-inclusions, and mineralogy along the EGRIP (East Greenland Ice Core Project) ice core – Part 2: Implications for palaeo-mineralogy Open
Impurities in polar ice do not only allow the reconstruction of past atmospheric aerosol concentrations but also influence the physical properties of the ice. However, the localisation of impurities inside the microstructure is still under…
View article: Origin of englacial stratigraphy at three deep ice core sites of the Greenland Ice Sheet by synthetic radar modelling
Origin of englacial stratigraphy at three deep ice core sites of the Greenland Ice Sheet by synthetic radar modelling Open
During the past 20 years, multi-channel radar emerged as a key tool for deciphering an ice sheet's internal architecture. To assign ages to radar reflections and connect them over large areas in the ice sheet, the layer genesis has to be u…
View article: Microstructure, micro-inclusions, and mineralogy along the EGRIP ice core – Part 1: Localisation of inclusions and deformation patterns
Microstructure, micro-inclusions, and mineralogy along the EGRIP ice core – Part 1: Localisation of inclusions and deformation patterns Open
Impurities deposited in polar ice enable the reconstruction of the atmospheric aerosol concentration of the past. At the same time they impact the physical properties of the ice itself such as its deformation behaviour. Impurities are thou…
View article: Comment on tc-2021-190
Comment on tc-2021-190 Open
Abstract. Impurities in polar ice do not only allow the reconstruction of past atmospheric aerosol concentrations but also influence the physical properties of the ice. However, the localisation of impurities inside the microstructure is s…
View article: Microstructure, Micro-inclusions and Mineralogy along the EGRIP ice core – Part 2: Implications for paleo-mineralogy
Microstructure, Micro-inclusions and Mineralogy along the EGRIP ice core – Part 2: Implications for paleo-mineralogy Open
Impurities in polar ice do not only allow the reconstruction of past atmospheric aerosol concentration, but also in- fluence the physical properties of the ice. However, the mineralogy and location of impurities in ice and the involved pro…
View article: Microstructure, Micro-inclusions and Mineralogy along the EGRIP ice core – Part 1: Localisation of inclusions and deformation patterns
Microstructure, Micro-inclusions and Mineralogy along the EGRIP ice core – Part 1: Localisation of inclusions and deformation patterns Open
Impurities deposited in polar ice allow the reconstruction of the atmospheric aerosol concentration of the past. At the same time they impact the physical properties of the ice itself such as its deformation behaviour. Impurities are thoug…
View article: Micro-inclusions in the EGRIP ice core identified with Raman-spectroscopy
Micro-inclusions in the EGRIP ice core identified with Raman-spectroscopy Open
<p>Soluble and insoluble impurities play a crucial role regarding the deformability and thus the flow of polar ice. To better understand this interplay from a mechanistic point of view it is especially important to investigate the lo…
View article: A Review of the Microstructural Location of Impurities in Polar Ice and Their Impacts on Deformation
A Review of the Microstructural Location of Impurities in Polar Ice and Their Impacts on Deformation Open
Insoluble and soluble impurities, enclosed in polar ice sheets, have a major impact on the deformation behaviour of the ice. Macro- and Micro-scale deformation observed in ice sheets and ice cores has been retraced to chemical loads in the…
View article: Using a composite flow law to model deformation in the NEEM deep ice core, Greenland – Part 2: The role of grain size and premelting on ice deformation at high homologous temperature
Using a composite flow law to model deformation in the NEEM deep ice core, Greenland – Part 2: The role of grain size and premelting on ice deformation at high homologous temperature Open
The ice microstructure in the lower part of the North Greenland Eemian Ice Drilling (NEEM) ice core consists of relatively fine-grained ice with a single maximum crystallographic preferred orientation (CPO) alternated by much coarser-grain…
View article: Short-scale variations in high-resolution crystal-preferred orientation data in an alpine ice core - do we need a new statistical approach?
Short-scale variations in high-resolution crystal-preferred orientation data in an alpine ice core - do we need a new statistical approach? Open
We analysed crystal-preferred orientation of c-axis and microstructure data from the Alpine ice core KCC at an unprecedented resolution and coverage of any Alpine ice core. We find that an anisotropic single-maximum fabric develops as earl…
View article: The upper 2121 m at EastGRIP - Results from physical properties of NEGIS
The upper 2121 m at EastGRIP - Results from physical properties of NEGIS Open
<div> <div> <div> <p>Here we present the ice microstructure and CPO (c-axes fabric) data from the upper 2121 m of the EastGRIP ice core, an on-going deep drilling project on the North East Greenland Ice Stream. Unde…
View article: Microparticles and crystal microstructure in polar ice sheets
Microparticles and crystal microstructure in polar ice sheets Open
The pollution input in polar ice sheets in Greenland and Antarctica is of atmospheric aeolian origin, just as all natural non-ice impurities as well. They thus provide potential information on the evolution of the atmospheric share of poll…
View article: Chemical Impurities and Physical Properties of Polar Ice
Chemical Impurities and Physical Properties of Polar Ice Open
The Greenland Ice Sheet and the Antarctic Ice Sheet are the largest reservoirs of freshwater on our planet. They consist of ice which formed over thousands of years out of the precipitation and due to natural densification of snow. As such…
View article: Inferring crystal orientation with polarimetric radar measurements at EastGRIP
Inferring crystal orientation with polarimetric radar measurements at EastGRIP Open
Crystal Orientation Fabric (COF) of c-axes in ice cores reveals information about deformation within ice sheets. While this is a well established analysis technique for deep ice cores from ice divides, information about COF in ice streams …
View article: Impurity Analysis and Microstructure Along the Climatic Transition From MIS 6 Into 5e in the EDML Ice Core Using Cryo-Raman Microscopy
Impurity Analysis and Microstructure Along the Climatic Transition From MIS 6 Into 5e in the EDML Ice Core Using Cryo-Raman Microscopy Open
Impurities in polar ice cores have been studied so far mainly for the purpose of reconstructions of past atmospheric aerosol concentrations. However, impurities also critically influence physical properties of the ice matrix itself. To imp…
View article: Using a composite flow law to model deformation in the NEEM deepice core, Greenland: Part 2 the role of grain size and premelting onice deformation at high homologous temperature
Using a composite flow law to model deformation in the NEEM deepice core, Greenland: Part 2 the role of grain size and premelting onice deformation at high homologous temperature Open
The ice microstructure in the lower part of the North Greenland Eemian Ice Drilling (NEEM) ice core consists of relatively fine grained glacial ice with a single maximum crystallographic preferred orientation (CPO) alternated by much coars…
View article: An analysis of the influence of deformation and recrystallisation on microstructures of the EastGRIP ice core
An analysis of the influence of deformation and recrystallisation on microstructures of the EastGRIP ice core Open
New and more detailed investigations from the EGRIP physical properties dataset down to 1650m of the ice core will be presented. EGRIP is the first deep ice core through one of our Earth’s ice sheets partly motivated by ice dynamics’ resea…