| Title | Operational processing of big satellite data for monitoring glacier dynamics, Case study Muldrow Glacier |
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| Author | Samsonov, S |
| Source | Remote Sensing 14, 11, 2679, 2022 p. 1-12, https://doi.org/10.3390/rs14112679  Open Access |
| Image |  |
| Year | 2022 |
| Alt Series | Natural Resources Canada, Contribution Series 20220091 |
| Publisher | MDPI |
| Document | serial |
| Lang. | English |
| Media | paper; digital; on-line |
| File format | pdf |
| Area | United States of America |
| Lat/Long WENS | -153.0000 -149.0000 64.0000 62.0000 |
| Subjects | geophysics; environmental geology; satellite imagery; satellite geodesy; glaciology; glaciers |
| Illustrations | location maps; graphs; flow diagrams |
| Program | Canada Centre for Remote Sensing People Support and Leadership |
| Released | 2022 06 03 |
| Abstract | Frequent acquisition of Synthetic Aperture Radar (SAR) data by the European Sentinel-1 satellites provides an opportunity for monitoring the dynamics of worldwide glaciers. We present a fully-automated
processing system for producing multi-dimensional time series of glacier flow. We then use this fully-automated processing system to investigate the dynamics of Muldrow Glacier, located in the Denali National Park and Preserve (Alaska, USA) during
the October 2014 - November 2021 period. We compute north, east, and vertical Surface-Parallel-Flow (SPF) and non-Surface-Parallel-Flow (nSPF) components of flow velocity and displacement with an average temporal resolution of 9 days and grid spacing
of 100 m. During this period, we observe a glacier surge, a manifold increase in glacier flow velocity, that started as early as 2017 and continues until the present; however, the near completion of this surge is apparent. This glacier previously
surged in 1906-1912 (the exact date is unknown) and in 1956-1957. We present our results in different ways to emphasize various aspects of the observed surge and demonstrate the full capability of our processing system. As the availability of SAR
data improves, we expect that the fully-automated processing systems, similar to the one presented here, will play an increasingly dominant role and soon entirely replace manual processing. |
| Summary | (Plain Language Summary, not published)
Frequent acquisition of satellite data by the European Sentinel-1 satellites provides an opportunity for monitoring the dynamics of worldwide glaciers.
We present a fully-automated processing system for producing multi-dimensional time series of glacier flow. We then use this fully-automated processing system to investigate the dynamics of Muldrow Glacier, located in the Denali National Park and
Preserve (Alaska, USA) during the October 2014 - November 2021 period. During this period, we observe a glacier surge, a manifold increase in glacier flow velocity, that started as early as 2017 and continues until the present; however, the near
completion of this surge is apparent. This glacier previously surged in 1906-1912 (the exact date is unknown) and in 1956-1957. We present our results in different ways to emphasize various aspects of the observed surge and demonstrate the full
capability of our processing system. As the availability of satellite data improves, we expect that the fully-automated processing systems, similar to the one presented here, will play an increasingly dominant role and soon entirely replace manual
processing. |
| GEOSCAN ID | 330134 |
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