MODIS observed increase in duration and spatial extent of sediment plumes in Greenland fjords

The freshwater flux from the Greenland Ice Sheet (GrIS) to the North Atlantic Ocean carries extensive but poorly documented volumes of sediment. We develop a suspended sediment concentration (SSC) retrieval algorithm using a large Greenland specific in situ data set. This algorithm is applied to all...
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Autor*in:	B. Hudson [verfasserIn] I. Overeem [verfasserIn] D. McGrath [verfasserIn] J. P. M. Syvitski [verfasserIn] A. Mikkelsen [verfasserIn] B. Hasholt [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2014

Übergeordnetes Werk:	In: The Cryosphere - Copernicus Publications, 2007, 8(2014), 4, Seite 1161-1176
Übergeordnetes Werk:	volume:8 ; year:2014 ; number:4 ; pages:1161-1176

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.5194/tc-8-1161-2014

Katalog-ID:	DOAJ028699726

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callnumber-first	G - Geography, Anthropology, Recreation
author	B. Hudson
spellingShingle	B. Hudson misc GE1-350 misc QE1-996.5 misc Environmental sciences misc Geology MODIS observed increase in duration and spatial extent of sediment plumes in Greenland fjords
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topic_title	GE1-350 QE1-996.5 MODIS observed increase in duration and spatial extent of sediment plumes in Greenland fjords
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title	MODIS observed increase in duration and spatial extent of sediment plumes in Greenland fjords
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title_full	MODIS observed increase in duration and spatial extent of sediment plumes in Greenland fjords
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title_sort	modis observed increase in duration and spatial extent of sediment plumes in greenland fjords
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title_auth	MODIS observed increase in duration and spatial extent of sediment plumes in Greenland fjords
abstract	The freshwater flux from the Greenland Ice Sheet (GrIS) to the North Atlantic Ocean carries extensive but poorly documented volumes of sediment. We develop a suspended sediment concentration (SSC) retrieval algorithm using a large Greenland specific in situ data set. This algorithm is applied to all cloud-free NASA Moderate Resolution Imaging Spectrometer (MODIS) Terra images from 2000 to 2012 to monitor SSC dynamics at six river plumes in three fjords in southwest Greenland. Melt-season mean plume SSC increased at all but one site, although these trends were primarily not statistically significant. Zones of sediment concentration < 50 mg L<sup<−1</sup< expanded in three river plumes, with potential consequences for biological productivity. The high SSC cores of sediment plumes ( < 250 mg L<sup<-1</sup< expanded in one-third of study locations. At a regional scale, higher volumes of runoff were associated with higher melt-season mean plume SSC values, but this relationship did not hold for individual rivers. High spatial variability between proximal plumes highlights the complex processes operating in Greenland's glacio–fluvial–fjord systems.
abstractGer	The freshwater flux from the Greenland Ice Sheet (GrIS) to the North Atlantic Ocean carries extensive but poorly documented volumes of sediment. We develop a suspended sediment concentration (SSC) retrieval algorithm using a large Greenland specific in situ data set. This algorithm is applied to all cloud-free NASA Moderate Resolution Imaging Spectrometer (MODIS) Terra images from 2000 to 2012 to monitor SSC dynamics at six river plumes in three fjords in southwest Greenland. Melt-season mean plume SSC increased at all but one site, although these trends were primarily not statistically significant. Zones of sediment concentration < 50 mg L<sup<−1</sup< expanded in three river plumes, with potential consequences for biological productivity. The high SSC cores of sediment plumes ( < 250 mg L<sup<-1</sup< expanded in one-third of study locations. At a regional scale, higher volumes of runoff were associated with higher melt-season mean plume SSC values, but this relationship did not hold for individual rivers. High spatial variability between proximal plumes highlights the complex processes operating in Greenland's glacio–fluvial–fjord systems.
abstract_unstemmed	The freshwater flux from the Greenland Ice Sheet (GrIS) to the North Atlantic Ocean carries extensive but poorly documented volumes of sediment. We develop a suspended sediment concentration (SSC) retrieval algorithm using a large Greenland specific in situ data set. This algorithm is applied to all cloud-free NASA Moderate Resolution Imaging Spectrometer (MODIS) Terra images from 2000 to 2012 to monitor SSC dynamics at six river plumes in three fjords in southwest Greenland. Melt-season mean plume SSC increased at all but one site, although these trends were primarily not statistically significant. Zones of sediment concentration < 50 mg L<sup<−1</sup< expanded in three river plumes, with potential consequences for biological productivity. The high SSC cores of sediment plumes ( < 250 mg L<sup<-1</sup< expanded in one-third of study locations. At a regional scale, higher volumes of runoff were associated with higher melt-season mean plume SSC values, but this relationship did not hold for individual rivers. High spatial variability between proximal plumes highlights the complex processes operating in Greenland's glacio–fluvial–fjord systems.
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title_short	MODIS observed increase in duration and spatial extent of sediment plumes in Greenland fjords
url	https://doi.org/10.5194/tc-8-1161-2014 https://doaj.org/article/4817beddb4634eb592df760103bdbf89 http://www.the-cryosphere.net/8/1161/2014/tc-8-1161-2014.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424
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up_date	2024-07-03T18:59:29.036Z
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MODIS observed increase in duration and spatial extent of sediment plumes in Greenland fjords

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