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Initial results from geophysical surveys and shallow coring of the Northeast Greenland Ice Stream (NEGIS)

P. Vallelonga, K. Christianson, R. B. Alley, S. Anandakrishnan, J. E. M. Christian, D. Dahl-Jensen, V. Gkinis, C. Holme, R. W. Jacobel, N. B. Karlsson, B. A. Keisling, S. Kipfstuhl (+11 others)
2014 The Cryosphere  
To better understand this important system, in the summer of 2012 we drilled a 67 m firn core and conducted ground-based radio-echo sounding (RES) and active-source seismic surveys at a site approximately  ...  Annual layer thicknesses averaged 0.11 m ice equivalent (i.e.) for the period 1607–2011, although accumulation varied between 0.08 and 0.14 m i.e., likely due to flow-related changes in surface topography  ...  Deeper ice may contain information on past changes or ongoing processes in ice stream dynamics that are important to understand in order to properly incorporate NEGIS into models of the Greenland Ice Sheet  ... 
doi:10.5194/tc-8-1275-2014 fatcat:ukpr2urbizdb3btqcqunfc54eu

Initial results from geophysical surveys and shallow coring of the Northeast Greenland Ice Stream (NEGIS)

P. Vallelonga, K. Christianson, R. B. Alley, S. Anandakrishnan, J. E. M. Christian, D. Dahl-Jensen, V. Gkinis, C. Holme, R. W. Jacobel, N. Karlsson, B. A. Keisling, S. Kipfstuhl (+11 others)
2014 The Cryosphere Discussions  
To better understand this important system, in the summer of 2012 we drilled a 67 m firn core and conducted ground-based radio-echo sounding (RES) and active-source seismic surveys at a site approximately  ...  Annual layer thicknesses averaged 0.11 m ice equivalent (i.e.) for the period 1607-2011, although accumulation varied between 0.08 and 0.14 m i.e., likely due to flowrelated changes in surface topography  ...  Deeper ice may contain information on past changes or ongoing processes in ice stream dynamics that are important to understand in order to properly incorporate NEGIS into models of the Greenland Ice Sheet  ... 
doi:10.5194/tcd-8-691-2014 fatcat:kfnlfcaqvrhrjcw7uezl4cpfte

Nanogeoscience: From the movement of electrons to lithosphere plates

Steven K. Lower, Michael F. Hochella, Jillian F. Banfield, Kevin M. Rosso
2002 EOS  
in all the books of the world could be written in a cube of material 200 um on a side.  ...  Climate Change Manifests in Different Modes At the briefing on issues concerning the cryosphere, another researcher presented data indicating that climate change can manifest itself in ways other than  ... 
doi:10.1029/2002eo000036 fatcat:dlmubixm4ba3zafcwlrtph3zue

Mid-Holocene thinning of David Glacier, Antarctica: chronology and controls

Jamey Stutz, Andrew Mackintosh, Kevin Norton, Ross Whitmore, Carlo Baroni, Stewart S. R. Jamieson, Richard S. Jones, Greg Balco, Maria Cristina Salvatore, Stefano Casale, Jae Il Lee, Yeong Bae Seong (+10 others)
2021 The Cryosphere  
To reconstruct changes in ice thickness, we use surface exposure ages of glacial erratics deposited on nunataks adjacent to fast-flowing sections of David Glacier.  ...  We show that glacier thinning and marine-based grounding-line retreat are controlled by either enhanced sub-ice-shelf melting, reduced lateral buttressing or a combination of the two, leading to marine  ...  In the field, we preferentially sampled To understand potential controls on grounding-line migration on isolated, local topographic high points, distant from areas and onshore thinning, we apply  ... 
doi:10.5194/tc-15-5447-2021 fatcat:5e77wpesi5bajcavuhixctpp5e

The impact of impervious water-storage parametrization on urban climate modelling

Hendrik Wouters, Matthias Demuzere, Koen De Ridder, Nicole P.M. van Lipzig
2015 Urban Climate  
We can use them to understand how we arrived at what we see now, or we can use them to predict where we will go in the future. This book presents photographs from around the world.  ...  on hillslopes, minerals glittering in the sun, and the remains of miniature creatures in rocks -they all reveal themselves as complex patterns from the scale of the universe down to the molecular level  ...  How we change the climate will have a direct impact on how glaciers, rivers, wind and coastal processes continue to shape the world in the future.  ... 
doi:10.1016/j.uclim.2014.11.005 fatcat:4nms4aiw55ghrbi2g3tbousvee

Glaciovolcanic hydrothermal environments in Iceland and implications for their detection on Mars

C.R. Cousins, I.A. Crawford, J.L. Carrivick, M. Gunn, J. Harris, T.P. Kee, M. Karlsson, L. Carmody, C. Cockell, B. Herschy, K.H. Joy
2013 Journal of Volcanology and Geothermal Research  
many landforms have been attributed to volcano -cryospheric interaction.  ...  In-situ and laboratory VNIR (440 -1000 nm) reflectance spectra representative of Mars rover multispectral imaging show spectral profiles to be influenced by Fe 2+/3+ -bearing minerals.  ...  Natural changes in unexploited hightemperature geothermal areas in Iceland. Proceedings World Geothermal Congress 2000.  ... 
doi:10.1016/j.jvolgeores.2013.02.009 fatcat:6awwyige75eadbeana4yxifnde

DTA/29-2019 The Arctic as seen from Ny-Ålesund: research results, new proposals and overviews - Rome 18th and 19th March 2019 [article]

CNR DTA-Dipartimento Terra E Ambiente
2020 Figshare  
the synergy between the different groups in relation to the new scientific emerging challenges  ...  ABSTRACTSThe workshop aims to highlight the state of the art of italian research activities at the CNR Arctic Station Dirigibile Italia Ny-Ålesund – Svalbard and to define common strategies to strengthen  ...  Poster Session Cryosphere Change in chemical composition of the annual snow layer: the effects of rain event and melting processes Iron speciation on Svalabard ice cores.  ... 
doi:10.6084/m9.figshare.11637738 fatcat:iayhyk454nat7jcbujhwz4i3mi

Characterization of glacier debris cover via in situ and optical remote sensing methods: a case study in the Khumbu Himalaya, Nepal

K. A. Casey, A. Kääb, D. I. Benn
2011 The Cryosphere Discussions  
Kindly direct all inquiries regarding the thesis to the copyright holder or the unit which grants the doctorate.  ...  A combination of field spectrometry and surface samples of snow, ice and debris were utilized to investigate supraglacial dust and debris diversity.  ...  Acknowledgements Acknowledgements I would like to thank Rune Solberg for collaboration on the Svalbard data collection as well as Andreas Kääb, Dorothy Hall and Oddvar Røyset for fruitful discussions.  ... 
doi:10.5194/tcd-5-499-2011 fatcat:fm3g35ddszertp734koheub7ey

Overview: Integrative and Comprehensive Understanding on Polar Environments (iCUPE) – concept and initial results

Tuukka Petäjä, Ella-Maria Duplissy, Ksenia Tabakova, Julia Schmale, Barbara Altstädter, Gerard Ancellet, Mikhail Arshinov, Yurii Balin, Urs Baltensperger, Jens Bange, Alison Beamish, Boris Belan (+60 others)
2020 Atmospheric Chemistry and Physics  
We set up the ERA-PLANET Strand 4 project "iCUPE – integrative and Comprehensive Understanding on Polar Environments" to provide novel insights and observational data on global grand challenges with an  ...  , intensive campaigns, and satellites to deliver data products, metrics, and indicators to stakeholders concerning the environmental status, availability, and extraction of natural resources in the polar  ...  to make advances in the understanding of atmospheric and cryospheric processes in the Arctic environment (Fig. 2) .  ... 
doi:10.5194/acp-20-8551-2020 fatcat:g2smd6jovnbtne2nntccpexz6u

Exoplanet Science Priorities from the Perspective of Internal and Surface Processes for Silicate and Ice Dominated Worlds [article]

Wade G. Henning, Joseph P. Renaud, Avi M. Mandell, Prabal Saxena, Terry A. Hurford, Soko Matsumura, Lori S. Glaze, Timothy A. Livengood, Vladimir Airapetian, Erik Asphaug, Johanna K. Teske, Edward Schwieterman, Michael Efroimsky, Valeri V. Makarov, Ciprian T. Berghea (+22 others)
2018 arXiv   pre-print
We emphasize that for a balanced understanding of extrasolar planets, it is important to look beyond the natural biases of current observing tools, and actively seek unique pathways to understand exoplanet  ...  As the number of known rocky and icy exoplanets grows in the years ahead, we expect demand for expertise in 'exogeoscience' will expand at a commensurately intense pace.  ...  is occurring on our neighbor. • Only one of the four terrestrial planets in our inner Solar System would be well-characterized by transmission spectroscopy.  ... 
arXiv:1804.05094v1 fatcat:zjft54yjy5cbljraslvhm7kpza

Theoretical Foundations of Remote Sensing for Glacier Assessment and Mapping [chapter]

Michael P. Bishop, Andrew B. G. Bush, Roberto Furfaro, Alan R. Gillespie, Dorothy K. Hall, Umesh K. Haritashya, John F. Shroder
2014 Global Land Ice Measurements from Space  
The international scientific community is actively engaged in assessing ice sheet and alpine glacier fluctuations at a variety of scales.  ...  conditions and map the cryosphere.  ...  In general, after preprocessing the imagery to enhance moving features, a computer program searches for correlation matches at many points in the image and, for each one, produces a subpixel estimate of  ... 
doi:10.1007/978-3-540-79818-7_2 fatcat:hxpzj5njcvflbh5hunggvd6uie

Nitrous oxide and methane in a changing Arctic Ocean

Andrew P. Rees, Hermann W. Bange, Damian L. Arévalo-Martínez, Yuri Artioli, Dawn M. Ashby, Ian Brown, Hanna I. Campen, Darren R. Clark, Vassilis Kitidis, Gennadi Lessin, Glen A. Tarran, Carol Turley
2021 Ambio  
The combined consequences of these stressors present a complex combination of environmental changes which might impact on trace gas production and their subsequent release to the Arctic atmosphere.  ...  Trace gases such as nitrous oxide (N2O) and methane (CH4) play important roles in both the atmospheric reactivity and radiative budget of the Arctic and thus have a high potential to influence the region's  ...  Acknowledgements This PETRA project was supported by the  ... 
doi:10.1007/s13280-021-01633-8 pmid:34628596 pmcid:PMC8692636 fatcat:4udqcee5ojgwxf3blkdcemf6nm

Identification of Potential Glacial Lake Sites and Mapping Maximum Extent of Existing Glacier Lakes in Drang Drung and Samudra Tapu Glaciers, Indian Himalaya

U. S. Maanya, Anil V. Kulkarni, Alok Tiwari, Enakshi Dasgupta Bhar, J. Srinivasan
2016 Current Science  
The difference in the time of acquisition between the two images, roughly a year in our study, was then used to compute the surface velocity values.  ...  This could be due to the difference in the time period between the measured (2005) and modeled (2015) values, and possible melt during this period owing to its proximity to the snout.  ...  Therefore, changes in the percentage share of vehicles plying on urban roads affect traffic and emission characteristics such as average traffic fleet speed, delay due to congestion and fuel consumption  ... 
doi:10.18520/cs/v111/i3/553-560 fatcat:3o6zjgn7hrai3onjqeifpelsma

Ice structures, patterns, and processes: A view across the icefields

Thorsten Bartels-Rausch, Vance Bergeron, Julyan H. E. Cartwright, Rafael Escribano, John L. Finney, Hinrich Grothe, Pedro J. Gutiérrez, Jari Haapala, Werner F. Kuhs, Jan B. C. Pettersson, Stephen D. Price, C. Ignacio Sainz-Díaz (+5 others)
2012 Reviews of Modern Physics  
We highlight open questions in the various fields of ice research in nature; ranging from terrestrial and oceanic ice on Earth, to ice in the atmosphere, to ice on other solar system bodies and in interstellar  ...  We look ahead from the frontiers of research on ice dynamics in its broadest sense; on the structures of ice, the patterns or morphologies it may assume, and the physical and chemical processes in which  ...  , the separation of the relative importance of atmospheric and oceanic forced change, and on understanding what mechanisms control the variability and change of sea ice.  ... 
doi:10.1103/revmodphys.84.885 fatcat:teh6sdfqwbd4nnk6ivqi5sfvvu

Landscape evolution in Martian mid-latitude regions: insights from analogous periglacial landforms in Svalbard

E. Hauber, D. Reiss, M. Ulrich, F. Preusker, F. Trauthan, M. Zanetti, H. Hiesinger, R. Jaumann, L. Johansson, A. Johnsson, S. Van Gasselt, M. Olvmo
2011 Geological Society Special Publication  
Finally, different qualitative scenarios of landscape evolution on Mars to better understand the action of periglacial processes on Mars in the recent past are proposed.  ...  Clear evidence for debris flows on Mars was only found in two new locations, in addition to a few previously published examples.  ...  A world of places and views, a world that would graze your knees if you fell on it, a world with winds and sunsets and the palest of moonlight. Almost a world like ours, except for the emptiness."  ... 
doi:10.1144/sp356.7 fatcat:mi5okfylk5d3xg6wqcghkaugcq
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