Results 251 to 260 of about 3,955,846 (280)
Fluctuations in the Flow Velocity of the Antarctic Shirase Glacier Over an 11-Year Period
Polar Science, 2010 AbstractTemporal fluctuations in the flow velocity of Shirase Glacier in Antarctica were studied using 15 synthetic aperture radar (SAR) scenes obtained by the Japanese Earth Resources Satellite-1 (JERS-1) in 1996–1998 and 9 phased-array-type L-band SAR (PALSAR) scenes obtained by the Advanced Land Observing Satellite (ALOS) in 2007–2008.
Kazuki Nakamura +2 more
exaly +2 more sources
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Numerical simulation of the flow velocity and temperature of the Dongkemadi Glacier
Environmental Earth Sciences, 2016The flow velocity and ice temperature of a glacier reflect the response of the glacier to climate change. However, because of the restrictions of observation conditions, it is often difficult to acquire the ice velocity and temperature field for the entire glacier profile.
Wu Zhen, Liu Shiyin, He Xiaobo
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Fusion and mining of glacier surface flow velocity time series
2020<p>Glacier response to climate change results in natural hazards, sea level rise and changes in freshwater resources. To evaluate this response, glacier surface flow velocity constitutes a crucial parameter to study. Nowadays, more and more velocity maps at regional or global scales issued from satellite SAR and/or optical images
Charrier, Laurane +6 more
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Validation for Ice Flow Velocity of Shirase Glacier Derived from PALSAR-2 Image Correlation
2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021Shirase Glacier is known to one of the fastest ice streams in Antarctic glaciers, and it is important to monitor the flow velocity of the glacier because of understanding the discharge of ice mass in Antarctica. The authors have shown that the flow velocity of Shirase Glacier can be estimated by applying the image correlation method to the amplitude ...
Kazuki Nakamura +4 more
openaire +2 more sources
High-Precision Ice-Flow Velocities From Ground Observations on Dalk Glacier, Antarctica
Polar Science, 2019 Abstract Dalk Glacier, which has been monitored by CHINARE since 2007, is a calving outlet glacier near the Chinese Zhongshan Station in East Antarctica. Using in situ observational azimuthal data from 2007 to 2012, 67 high-precision spatial intersection points were calculated.
Songtao Ai, Yuande Yang, Geir Moholdt
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Remote Sensing of Environment, 2013
Abstract Image matching via correlation of remotely sensed imagery is an increasingly popular technique for measuring glacier flow because it can provide spatially distributed measurements while mitigating many of the challenges accompanying in situ measurements of glacier velocity. Despite the increasing use of such techniques, and the requirement
Andreas M. Kääb, Pascal Sirguey
exaly +2 more sources
Abstract Image matching via correlation of remotely sensed imagery is an increasingly popular technique for measuring glacier flow because it can provide spatially distributed measurements while mitigating many of the challenges accompanying in situ measurements of glacier velocity. Despite the increasing use of such techniques, and the requirement
Andreas M. Kääb, Pascal Sirguey
exaly +2 more sources
Glacier Surface Flow Velocity of Hunza Basin, Karakoram Using Satellite Optical Data
2020High degree of uncertainty about Karakoram glaciers is being reported in literature due to complicated topography and weather. Karakoram glaciers receive their precipitation primarily by westerlies. Glaciers are the real indicators for understanding the impacts of climate change due to global warming.
S. Sivaranjani +2 more
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Global mapping of surface flow velocity and re-evaluation of the volume of the world's glaciers
2021<p><span>The effects of climate change on water resources and sea level are largely determined by the size of the ice reservoirs around the world, which still remains largely uncertain. Ice flow defines the transfer of ice within a glacier and therefore largely governs the spatial distribution of the ice volume.
Romain Millan +3 more
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The velocity field and flow regime of David Glacier and Drygalski Ice Tongue, Antarctica
Polar Geography, 2009Abstract We analyze spatial and temporal variability of the surface velocity field of David Glacier and its floating seaward extension Drygalski Ice Tongue. We obtain velocity measurements by combinations of automated feature tracking, interferometry and speckle tracking using 1997 Antarctic Mapping Mission-1 and 2000 Modified Antarctic Mapping Mission
J. Wuite +4 more
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IEEE Transactions on Geoscience and Remote Sensing, 2023
Nowadays, satellite observations cover most of the Earth’s surface in a repetitive manner. This information is crucial for documenting variability and environmental changes such as glacier surface velocity. With this in mind, digital image processing has been developed and improved over the past decades.
Jérémie Mouginot +3 more
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Nowadays, satellite observations cover most of the Earth’s surface in a repetitive manner. This information is crucial for documenting variability and environmental changes such as glacier surface velocity. With this in mind, digital image processing has been developed and improved over the past decades.
Jérémie Mouginot +3 more
openaire +4 more sources