Polar Remote Sensing. Vol. 2: Ice Sheets. By Robert  Massom and Dan  Lubin. Berlin: Springer‐Praxis, 2006. 426 pages, 137 figures, 1 table, $189.00 cloth.

2008 ◽  
Vol 116 (1) ◽  
pp. 103-103
Author(s):  
Ted A. Scambos
Keyword(s):  
Remote Sensing ◽  
Ice Sheets

scholarly journals Ice sheet velocity tracking by Sentinel-1 satellite images at Graham Coast Kyiv Peninsula

2021 ◽  
pp. 24-31
Author(s):  
S. Kadurin ◽  
◽  
K. Andrieieva ◽  
Keyword(s):  
Remote Sensing ◽  
Global Climate ◽  
Ice Sheets ◽  
Ice Sheet ◽  
Remote Sensing Data ◽  
Ice Cover ◽  
Satellite System ◽  
Time Interval ◽  
Radar Images ◽  
Ocean Level

The study of Antarctic glaciers and ice sheets velocity is one of the most discussed topics. Such high interest in this topic is primarily because the ice from the Antarctic glaciers, which gets to the ocean, significantly affects the ocean level and the global climate. Development of modern satellite technologies for Earth remote sensing made it possible to elaborate a number of methods for ice sheets’ displacements estimation and calculation of such displacements velocities. This work uses remote sensing data from the satellite system Copernicus Sentinel-1 to estimate the ice cover velocities in the Kyiv Peninsula in the time interval from December 2020 to March 2021. To this end, 10 radar images of the study area from early December to the end of March were used with an interval of 12–14 days. All selected images were analyzed in pairs to establish changes on the surface for the selected time interval. GRD-format images from Copernicus Sentinel-1 satellite, corrected for Earth's ellipsoid shape, were used. Based on the offset tracking operation, we calculated the speeds of ice cover movements within the Kyiv Peninsula for each pair of images with approximately two weeks' time difference. As a result, the speed of ice movements varies considerably and at the glacier mouth can reach 3.5–4 meters per day. Also, the rate of ice displacement in the glacier body changed over time. Thus, the highest ice velocities were in the glacier's mouth. However, short-term time intervals of intensification were recorded for the rear and even the marginal parts of the glaciers in contact with the ice sheet. Thus, the lowest part of the glacier activating sequence leads to the upper part shifting. Notably, this increase in the displacement of ice cover was recorded in February, one of the warmest months in this part of Antarctica.

scholarly journals Brief communication: Mapping Greenland's perennial firn aquifers using enhanced-resolution L-band brightness temperature image time series

2020 ◽  
Vol 14 (9) ◽  
pp. 2809-2817
Author(s):  
Julie Z. Miller ◽  
David G. Long ◽  
Kenneth C. Jezek ◽  
Joel T. Johnson ◽  
Mary J. Brodzik ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Time Series ◽  
Soil Moisture ◽  
Brightness Temperature ◽  
Ice Sheets ◽  
Ice Sheet ◽  
Greenland Ice Sheet ◽  
Enhanced Resolution ◽  
L Band ◽  
Coherent Radar

Abstract. Enhanced-resolution L-band brightness temperature (TB) image time series generated from observations collected over the Greenland Ice Sheet by NASA's Soil Moisture Active Passive (SMAP) satellite are used to map Greenland's perennial firn aquifers from space. Exponentially decreasing L-band TB signatures are correlated with perennial firn aquifer areas identified via the Center for Remote Sensing of Ice Sheets (CReSIS) Multi-Channel Coherent Radar Depth Sounder (MCoRDS) that was flown by NASA's Operation IceBridge (OIB) campaign. An empirical algorithm to map extent is developed by fitting these signatures to a set of sigmoidal curves. During the spring of 2016, perennial firn aquifer areas are found to extend over ∼66 000 km2.

A flowline map of glaciated Canada based on remote sensing dataThis paper is accompanied by a large foldout map entitled A flowline map of glaciated Canada based on remote sensing data (see pocket on back cover).

2010 ◽  
Vol 47 (1) ◽  
pp. 89-101 ◽  
Author(s):  
John Shaw ◽  
Davis Sharpe ◽  
Jeff Harris
Keyword(s):  
Remote Sensing ◽  
Large Scale ◽  
Mineral Exploration ◽  
Ice Sheets ◽  
Remote Sensing Data ◽  
Shuttle Radar Topography Mission ◽  
Geographical Information ◽  
Sensing Data ◽  
Landsat 7 ◽  
Large Scale Flow

The map A flowline map of glaciated Canada based on remote sensing data presents flowlines for the former Laurentide and Cordilleran ice sheets based on flow indicators derived from aggregated, flow-parallel landforms — drumlins and crag and tails, fluting, sinuous ridges and furrows, and rises. An extensive review introduces the concepts and evolution of flowline mapping at continental-ice-sheet and regional scales, emphasizing the use of new remote sensing data. Coherent, glaciologically plausible sets of flowlines mapped as flow tracts reflect large-scale flow structure in the paleo-ice sheets and demarcate fields of flow-parallel bedforms. In addition to flow reconstruction, mapped distributions of fields of glacial terrain types — hummocky terrain, Rogen terrain, and bedrock-dominant terrain — increase our power to interpret flowlines and, in turn, give evidence on the genesis of these terrains. End moraines and eskers also aid map interpretation. Landsat 7 Enhanced Thematic Mapper+ (ETM+) satellite images and Shuttle Radar Topography Mission (SRTM) hill shades provide the basic information for this flowline mapping in a Geographical Information System (ArcMap). Information on the Flowline Map allows us to develop conceptual models of ice sheets and to appreciate regional constraints on applications in mineral exploration, in aggregate and groundwater discovery and assessment, in soil and landform genesis, and in glaciology, paleoclimatology, and paleoceanography.

scholarly journals Brief communication: Mapping Greenland’s perennial firn aquifers using enhanced- resolution L-band brightness temperature image time series

2020 ◽  
Author(s):  
Julie Z. Miller ◽  
David G. Long ◽  
Kenneth .C Jezek ◽  
Joel T. Johnson ◽  
Mary J. Brodzik ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Time Series ◽  
Soil Moisture ◽  
Brightness Temperature ◽  
Ice Sheets ◽  
Ice Sheet ◽  
Greenland Ice Sheet ◽  
Enhanced Resolution ◽  
L Band ◽  
Coherent Radar

Abstract. Enhanced-resolution L-band brightness temperature (TB) image time series collected over the Greenland ice sheet by NASA’s Soil Moisture Active Passive (SMAP) satellite are used to map Greenland’s perennial firn aquifers from space. Exponentially decreasing L-band TB signatures are correlated with perennial firn aquifer areas identified via the Center for Remote Sensing of Ice Sheets (CReSIS) Multi-Channel Coherent Radar Depth Sounder (MCoRDS) flown by NASA’s Operation IceBridge (OIB) campaign. An empirical algorithm to map extent is developed by fitting these signatures to a set of sigmoidal curves. During the spring of 2016, perennial firn aquifer areas are found to extend over ~66,000 km2.

Glacial geomorphology: Towards a convergence of glaciology and geomorphology

2010 ◽  
Vol 34 (3) ◽  
pp. 327-355 ◽  
Author(s):  
Robert G. Bingham ◽  
Edward C. King ◽  
Andrew M. Smith ◽  
Hamish D. Pritchard
Keyword(s):  
Remote Sensing ◽  
Numerical Modelling ◽  
Landscape Evolution ◽  
Ice Sheets ◽  
Ice Streams ◽  
Glacial Geomorphology ◽  
West Antarctic Ice Sheet ◽  
West Antarctic ◽  
Future Challenges ◽  
Glacial Landform

This review presents a perspective on recent trends in glacial geomorphological research, which has seen an increasing engagement with investigating glaciation over larger and longer timescales facilitated by advances in remote sensing and numerical modelling. Remote sensing has enabled the visualization of deglaciated landscapes and glacial landform assemblages across continental scales, from which hypotheses of millennial-scale glacial landscape evolution and associations of landforms with palaeo-ice streams have been developed. To test these ideas rigorously, the related goal of imaging comparable subglacial landscapes and landforms beneath contemporary ice masses is being addressed through the application of radar and seismic technologies. Focusing on the West Antarctic Ice Sheet, we review progress to date in achieving this goal, and the use of radar and seismic imaging to assess: (1) subglacial bed morphology and roughness; (2) subglacial bed reflectivity; and (3) subglacial sediment properties. Numerical modelling, now the primary modus operandi of ‘glaciologists’ investigating the dynamics of modern ice sheets, offers significant potential for testing ‘glacial geomorphological’ hypotheses of continental glacial landscape evolution and smaller-scale landform development, and some recent examples of such an approach are presented. We close by identifying some future challenges in glacial geomorphology, which include: (1) embracing numerical modelling as a framework for testing hypotheses of glacial landform and landscape development; (2) identifying analogues beneath modern ice sheets for landscapes and landforms observed across deglaciated terrains; (3) repeat-surveying dynamic subglacial landforms to assess scales of formation and evolution; and (4) applying glacial geomorphological expertise more fully to extraterrestrial cryospheres.

scholarly journals Detecting and measuring new snow accumulation on ice sheets by satellite remote sensing

2005 ◽  
Vol 98 (4) ◽  
pp. 388-402 ◽  
Author(s):  
R BINDSCHADLER ◽  
H CHOI ◽  
C SHUMAN ◽  
T MARKUS
Keyword(s):  
Remote Sensing ◽  
Satellite Remote Sensing ◽  
Ice Sheets ◽  
Snow Accumulation

scholarly journals Autonomous ice sheet surface mass balance measurements from cosmic rays

2018 ◽  
Vol 12 (6) ◽  
pp. 2099-2108 ◽  
Author(s):  
Ian M. Howat ◽  
Santiago de la Peña ◽  
Darin Desilets ◽  
Gary Womack
Keyword(s):  
Remote Sensing ◽  
Mass Balance ◽  
Ice Sheets ◽  
Ice Sheet ◽  
Cosmic Ray ◽  
Fast Neutrons ◽  
Large Network ◽  
Equivalent Thickness ◽  
Mass Accumulation ◽  
Better Than

Abstract. Observations of mass accumulation and net balance on glaciers and ice sheets are sparse due to the difficulty of acquiring manual measurements and the lack of a reliable remote-sensing method. The methodology for recording the water-equivalent accumulation of snowfall using the attenuation of fast neutrons generated by cosmic ray impacts was developed in the 1970s and has been employed in large-network snowpack monitoring but has yet to be applied to glaciers and ice sheets. In order to assess this potential method, we installed a cosmic ray neutron-sensing device at Summit Camp, Greenland, in April 2016. Hourly neutron count was recorded for ∼ 24 months and converted to water-equivalent thickness after correcting for variability in atmospheric pressure and incoming cosmic radiation. The daily accumulation estimates are analysed for noise level and compared to manual surface core and snow stake network measurements. Based on measurements of up to 56 cm of water equivalent, we estimate the sensor's precision to be better than 1 mm for water-equivalent thicknesses less than 14 cm and better than 1 cm in up to 140 cm, or approximately 0.7 %. Our observations agree with the surface core measurements to within their respective errors, with temporary biases that are explained by snow drifting, as supported by comparison to the snow stake network. Our observations reveal large temporal variability in accumulation on daily to monthly scales, but with similar annual totals. Based on these results, cosmic ray sensing represents a potentially transformative method for acquiring continuous in situ measurements of mass accumulation that may add constraint to glacier and ice sheet mass balance estimates from meteorological models and remote sensing.

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