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Monitoring Changes in Ice Shelf Rift...

Breyer, Canyon,

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Monitoring Changes in Ice Shelf Rift Propagation and Infilling mélange with ICESat-2 and Landsat Imagery in East Antarctica /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Monitoring Changes in Ice Shelf Rift Propagation and Infilling mélange with ICESat-2 and Landsat Imagery in East Antarctica // Canyon Breyer.
作者:	Breyer, Canyon,
面頁冊數:	1 electronic resource (71 pages)
附註:	Source: Masters Abstracts International, Volume: 85-07.
Contained By:	Masters Abstracts International85-07.
標題:	Remote sensing. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30310232
ISBN:	9798381386295

Monitoring Changes in Ice Shelf Rift Propagation and Infilling mélange with ICESat-2 and Landsat Imagery in East Antarctica /
Breyer, Canyon,

Monitoring Changes in Ice Shelf Rift Propagation and Infilling mélange with ICESat-2 and Landsat Imagery in East Antarctica /Canyon Breyer. - 1 electronic resource (71 pages)

Source: Masters Abstracts International, Volume: 85-07.

Amery Ice Shelf (AIS) in East Antarctica acts as the primary buttress for the largest reservoir of potential sea level rise in the region: the Lambert-Amery Basin. Iceberg calving is an important mass loss process for ice shelf systems and is one of the ways that an ice shelf loses mass. While calving events themselves are not inherently concerning for an ice shelf, changes from the steady state such as increased rifting and shortening calving cycles can indicate a mass imbalance. Therefore, it is crucial to understand calving processes to improve our ability to detect potential imbalances. Rifting is a precursor to all tabular iceberg calving events, yet there are many aspects of this process that remain unclear; for example, the disputed role of mélange (the ice mixture which congeals inside the rift at sea level) in rift propagation (Fricker, Young, et al., 2005; Larour et al., 2004). We use advances in satellite remote sensing to develop a metric for characterizing the propagation regime of ice rifts to indicate increased potential for calving events: the Rift Growth Metric (RGM). We determine the RGM from geometric observations derived from Landsat 8 imagery and ICESat-2 laser altimetry. ICESat-2 data enables us to characterize the status and behavior of mélange within each rift investigating its impacts on propagation of ice rifts on AIS. This method determines propagation shifts and assess mélange thickness spatiotemporally using geographic information systems software builds on established behavior of rift system dynamics before and after iceberg calving.

English

ISBN: 9798381386295Subjects--Topical Terms:

535394
Remote sensing.
Subjects--Index Terms:

Antarctica

Monitoring Changes in Ice Shelf Rift Propagation and Infilling mélange with ICESat-2 and Landsat Imagery in East Antarctica /
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520 $a Amery Ice Shelf (AIS) in East Antarctica acts as the primary buttress for the largest reservoir of potential sea level rise in the region: the Lambert-Amery Basin. Iceberg calving is an important mass loss process for ice shelf systems and is one of the ways that an ice shelf loses mass. While calving events themselves are not inherently concerning for an ice shelf, changes from the steady state such as increased rifting and shortening calving cycles can indicate a mass imbalance. Therefore, it is crucial to understand calving processes to improve our ability to detect potential imbalances. Rifting is a precursor to all tabular iceberg calving events, yet there are many aspects of this process that remain unclear; for example, the disputed role of mélange (the ice mixture which congeals inside the rift at sea level) in rift propagation (Fricker, Young, et al., 2005; Larour et al., 2004). We use advances in satellite remote sensing to develop a metric for characterizing the propagation regime of ice rifts to indicate increased potential for calving events: the Rift Growth Metric (RGM). We determine the RGM from geometric observations derived from Landsat 8 imagery and ICESat-2 laser altimetry. ICESat-2 data enables us to characterize the status and behavior of mélange within each rift investigating its impacts on propagation of ice rifts on AIS. This method determines propagation shifts and assess mélange thickness spatiotemporally using geographic information systems software builds on established behavior of rift system dynamics before and after iceberg calving.
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653 $a GIS
653 $a Ice
653 $a ICESat-2
653 $a Landsat
653 $a Mélange
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710 2 $a University of California, San Diego. $b Scripps Institution of Oceanography. $e degree granting institution. $3 3814514
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