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Spatiotemporal Variability of Velocity and Influence of Glacier Thickness Using Landsat Imagery: Hunza River Basin, Karakoram Range (1993–2019)
2021
IEEE Access
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FIGURE 5 . 5 Surface velocity of the glaciers from ITS LIVE in the Hunza Basin, Karakoram Mountains. ...
FIGURE 6 . 6 (a) Average surface velocity of the glaciers from 1993 to 2019 in the Hunza Basin, Karakoram Mountains. Regions I and II show the seasonal glacier velocity. ...
doi:10.1109/access.2021.3078775
fatcat:bnsbtg7ojnd5pk5xhr3ogjvtxq
Surging Dynamics of Glaciers in the Hunza Valley under an Equilibrium Mass State since 1990
2020
Remote Sensing
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Further, glacier surface velocities in the Hunza Basin were estimated from Landsat images for the period of 1990–2018 by utilizing published data sets and Landsat images. ...
Compared to the annual glacier surface velocities, 22 surge events were observed in seven surge-type glaciers in the Hunza Basin. ...
We thank the USGS for free access to Landsat and SRTM C-band data. Randolph Glacier Inventory is available from GLIMS (https://www.glims.org/). ...
doi:10.3390/rs12182922
fatcat:5yhhk77qzndlbooef66ae7wpoy
Glacier changes in the Karakoram region mapped by multimission satellite imagery
2014
The Cryosphere
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The combination of multitemporal optical imagery and SAR-based surface velocities enables an improved, Karakoram-wide glacier inventory and hence, provides relevant new observational information on the ...
High-resolution SAR data enables the investigation of small and relatively fast-flowing glaciers (e.g., up to 1.8 m day<sup>−1</sup> during an active phase of a surge). ...
Glacier surface velocities Surface velocities were derived using offset intensity tracking on repeat SAR satellite imagery, also known as cross-correlation optimization procedure (Lange et al., 2007; ...
doi:10.5194/tc-8-977-2014
fatcat:kxgeif5x5jhjrexuzsejfneody
Glacier changes in the Karakoram region mapped by multi-mission satellite imagery
2013
The Cryosphere Discussions
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Besides a regional spatial coverage of ice dynamics, high-resolution SAR data allows to investigate very small and comparably fast flowing 10 glaciers (up to 1.8 m day −1 ). ...
We recommend regular acquisitions of high resolution (bi-static) SAR satellite data and further exploitation of the archives in order to generate an improved database for monitoring changes, and to at ...
Glacier surface velocities Surface velocities were derived using offset intensity tracking on repeat SAR satellite imagery, also known as cross-correlation optimization procedure (Lange et al., 2007; ...
doi:10.5194/tcd-7-4065-2013
fatcat:r7sr3y2u2fhyfg7unh73zvrroy
Glacier-Related Hazards Along the International Karakoram Highway: Status and Future Perspectives
2021
Frontiers in Earth Science
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and the Hunza River Basin. ...
Glacial lake outburst floods mainly occur in the spring and summer in the Hunza River Basin. ...
ACKNOWLEDGMENTS We thank the USGS and NASA for the freely available Landsat and ASTER imagery and ITS_LIVE data. We thank Luc Girod for providing the freely available MMASTER tool. ...
doi:10.3389/feart.2021.611501
fatcat:hpdnc3b4nvcj7mstmkgyd2ivou
Surge of Hispar Glacier, Pakistan, between 2013 and 2017 detected from remote sensing observations
2018
Geomorphology
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and structure of the manuscript. ...
Acknowledgements The authors express gratitude to the three anonymous reviewers for their valuable comments and suggestions on the earlier versions of the manuscript that have greatly improved the content ...
Although no significant change in the velocity of the glacier snout was observed, inspection of the optical satellite data revealed that the glacier had expanded laterally. ...
doi:10.1016/j.geomorph.2017.12.018
fatcat:m2swc2k4arhpbhfli2qafwaddm
The 2015 Surge of Hispar Glacier in the Karakoram
2017
Remote Sensing
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We here present the evolution of flow velocities and surface features from its 2015/16 surge as revealed from a dense time series of SAR and optical images along with an analysis of historic satellite ...
We here present the evolution of flow velocities and surface features from its 2015/16 surge as revealed from a dense time series of SAR and optical images along with an analysis of historic satellite ...
RADARSAT-2 data was provided by the Canadian Space Agency under the proposal SOAR-EI 5166. Glacier outlines were obtained from the Randolph Glacier Inventory (RGI5.0). ...
doi:10.3390/rs9090888
fatcat:rxdgvsfiq5eubpv4hry7ab7axy
Climate–Glacier Dynamics and Topographic Forcing in the Karakoram Himalaya: Concepts, Issues and Research Directions
2017
Water
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Advanced geospatial technologies have yet to be effectively used to characterize scale-dependencies of parameters and surface processes that govern climate-glacier dynamics [47, 48] . ...
dynamics in the Karakoram Himalaya; a region of known spatial anomalies related to climate, surface processes, tectonics and glacier fluctuations. ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/w9060405
fatcat:sbbv3shgsnebdnbxggjkvi5zui
The Evolution of the Glacier Surges in the Tuanjie Peak, the Qilian Mountains
2022
Remote Sensing
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Here, we utilize optical images acquired between 1973 and 2021 to map changes in glacier surface velocity and morphology and characterize differences in surface elevation using multi-source DEMs in the ...
Although it was impossible to obtain integrated velocity profiles throughout the glacier surge process due to the limitations of available satellite imagery, our recent observations show that winter velocities ...
Data Availability Statement: The study did not report any data.
Conflicts of Interest: The authors declare no conflict of interest. Remote Sens. 2022, 14, 852 ...
doi:10.3390/rs14040852
fatcat:iqb7pfleujhpfdawr3nwwajw3i
Satellite observations show no net change in the percentage of supraglacial debris-covered area in northern Pakistan from 1977 to 2014
2015
Journal of Glaciology
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This coupling of trends combined with our 37 year time series of data suggests the Karakoram anomaly extends further back in time than previously known. ...
The time series of debris-covered surface area change shows a mean value of zero or near-zero change for both surging and non-surging glaciers. ...
The views and interpretations in this publication are those of the authors and are not necessarily attributable to their organizations. ...
doi:10.3189/2015jog14j227
fatcat:5jcj73wiibfy3lux76izvykake
A consistent glacier inventory for Karakoram and Pamir derived from Landsat data: distribution of debris cover and mapping challenges
2018
Earth System Science Data
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In particular, precise outlines of glacier extent are required to spatially constrain glacier-specific calculations such as length, area, and volume changes or flow velocities. ...
We applied a standardized method of automated digital glacier mapping and manual correction using coherence images from the Advanced Land Observing Satellite 1 (ALOS-1) Phased Array type L-band Synthetic ...
of the European Commission. ...
doi:10.5194/essd-10-1807-2018
fatcat:cupt47vlrbg4jgyptwtuc7oloy
The State of Remote Sensing Capabilities of Cascading Hazards Over High Mountain Asia
2019
Frontiers in Earth Science
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Given the limitations of in situ surveys in steep and often inaccessible terrain, remote sensing data are a valuable resource for better understanding and quantifying these processes. ...
The present work provides a survey of cascading hazard processes impacting HMA and how these can be characterized using remote sensing sources. ...
Surface velocities can be used to identify surging glaciers, which are common in the Karakoram (Hewitt, 2007) . ...
doi:10.3389/feart.2019.00197
pmid:33505978
pmcid:PMC7837424
fatcat:tormye7u2bhllh6xu2yhdzzlwi
A consistent glacier inventory for the Karakoram and Pamir regions derived from Landsat data: distribution of debris cover and mapping challenges
2018
Earth System Dynamics Discussions
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In particular, precise outlines of glacier extent are required to spatially constrain glacier-specific calculations such as length, area and volume changes or flow velocities. ...
As a contribution to the Randolph Glacier Inventory (RGI) and the GLIMS glacier database, we have produced a homogeneous inventory of the Pamir and the Karakoram mountain ranges using 28 Landsat TM and ...
map debris cover over a large set of glaciers using optical satellite imagery alone. ...
doi:10.5194/essd-2018-35
fatcat:rqu55y2yunaf3lujqhwvsu5m4e
Status and Change of the Cryosphere in the Extended Hindu Kush Himalaya Region
[chapter]
2019
The Hindu Kush Himalaya Assessment
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We also thank the researchers and colleagues who have graciously provided us with their data and model outputs (Rianne Giesen, Valentina Radic, Ben Marzeion, Daniel Farinotti) and information (Phuntsho ...
We appreciate the specific and general comments of our reviewers and colleagues, and the support of the review editor Koji Fujita. Any remaining errors or omissions are ours. ...
Freely available surface elevation data can thus be used to estimate current and future glacier thicknesses and bed topographies. ...
doi:10.1007/978-3-319-92288-1_7
fatcat:77uqfujcijf77j4tnopahxdxnq
A Comparative Study of Active Rock Glaciers Mapped from Geomorphic- and Kinematic-Based Approaches in Daxue Shan, Southeast Tibetan Plateau
2021
Remote Sensing
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The mean downslope velocities of ARGs calculated from InSAR are between 2.8 and 107.4 mm∙a−1. ...
Nonetheless, the completeness of the InSAR-assist KBI is affected by the SAR data acquisition time, signal decorrelation, geometric distortion of SAR images, and the sensitivity of the InSAR measurement ...
Rock glacier inventory, permafrost probability distribution modeling and
associated hazards in the Hunza River Basin, Western Karakoram, Pakistan. Sci. Total Environ. 2021, 782, 146833. ...
doi:10.3390/rs13234931
fatcat:qeqehmtgwrcldnaxnirlf2ovc4
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