Spatial variation in grain-size population of surface sediments from northern Bering Sea and western Arctic Ocean: implications for provenance and depositional mechanisms
In general, sediments in nature comprise populations of various diameters. Accurate information regarding the sources and depositional mechanisms of the populations can be obtained through their temporal and spatial comparisons. In this study, the grain size distribution of surface sediments from th...
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ftarcticportal:oai:generic.eprints.org:2729 2023-12-10T09:39:03+01:00 Spatial variation in grain-size population of surface sediments from northern Bering Sea and western Arctic Ocean: implications for provenance and depositional mechanisms Weiguo, Wang Jichao, Yang Mengwei, Zhao Linsen, Dong Min, Jiang Erhui, Huang 2020-09 application/pdf http://library.arcticportal.org/2729/ http://library.arcticportal.org/2729/1/A2003005.pdf en eng Polar Research Institute of China - PRIC http://library.arcticportal.org/2729/1/A2003005.pdf Weiguo, Wang and Jichao, Yang and Mengwei, Zhao and Linsen, Dong and Min, Jiang and Erhui, Huang (2020) Spatial variation in grain-size population of surface sediments from northern Bering Sea and western Arctic Ocean: implications for provenance and depositional mechanisms. Advances in Polar Science, 31 (3). pp. 192-204. Oceans Article PeerReviewed 2020 ftarcticportal 2023-11-15T23:54:41Z In general, sediments in nature comprise populations of various diameters. Accurate information regarding the sources and depositional mechanisms of the populations can be obtained through their temporal and spatial comparisons. In this study, the grain size distribution of surface sediments from the Bering Sea and western Arctic Ocean were fitted and partitioned into populations using a log-normal distribution function. The spatial variations in the populations indicate differences in their sources and deposition mechanisms. The sediments on most of the Bering Sea Shelf originated from the Yukon River, and were transported westward by waves and currents. However, the presence of a coarser population outside Anadyr Bay was the result of Anadyr River transport. Additionally, a northward transport trend of fine suspended particles was observed on the west side of the Bering Sea Shelf. The sediments in Hope Valley in the south Chukchi Sea also originated from the Yukon River. The coarser population on the central Chukchi Sea Shelf originated from coast of Alaska to the east, not the Yukon River, and was transported by sea ice and bottom brine water. The populations of sediments from the Chukchi Basin and the base of the Chukchi Sea Slope are the result of sea ice and eddy action. Surface sediments from the western high Arctic Ocean predominantly comprised five populations, and two unique populations with mode diameters of 50–90 μm and 200–400 μm, respectively, were ubiquitous in the glacial and interglacial sediments. It was difficult to distinguish whether these two populations originated from sea ice or icebergs. Therefore, caution should be exercised when using either the > 63 μm or > 250 μm fractions in sediments as a proxy index for iceberg and ice sheet variation in the high Arctic Ocean. Article in Journal/Newspaper Advances in Polar Science Anadyr Anadyr' Arctic Arctic Arctic Ocean Bering Sea Chukchi Chukchi Sea Ice Sheet Iceberg* Polar Science Polar Science Sea ice Yukon river Alaska Yukon Arctic Portal Library Arctic Arctic Ocean Yukon Bering Sea Chukchi Sea Anadyr ENVELOPE(177.510,177.510,64.734,64.734) Anadyr’ ENVELOPE(176.233,176.233,64.882,64.882) Anadyr River ENVELOPE(177.924,177.924,64.489,64.489) Hope Valley ENVELOPE(-171.000,-171.000,68.833,68.833) |
institution |
Open Polar |
collection |
Arctic Portal Library |
op_collection_id |
ftarcticportal |
language |
English |
topic |
Oceans |
spellingShingle |
Oceans Weiguo, Wang Jichao, Yang Mengwei, Zhao Linsen, Dong Min, Jiang Erhui, Huang Spatial variation in grain-size population of surface sediments from northern Bering Sea and western Arctic Ocean: implications for provenance and depositional mechanisms |
topic_facet |
Oceans |
description |
In general, sediments in nature comprise populations of various diameters. Accurate information regarding the sources and depositional mechanisms of the populations can be obtained through their temporal and spatial comparisons. In this study, the grain size distribution of surface sediments from the Bering Sea and western Arctic Ocean were fitted and partitioned into populations using a log-normal distribution function. The spatial variations in the populations indicate differences in their sources and deposition mechanisms. The sediments on most of the Bering Sea Shelf originated from the Yukon River, and were transported westward by waves and currents. However, the presence of a coarser population outside Anadyr Bay was the result of Anadyr River transport. Additionally, a northward transport trend of fine suspended particles was observed on the west side of the Bering Sea Shelf. The sediments in Hope Valley in the south Chukchi Sea also originated from the Yukon River. The coarser population on the central Chukchi Sea Shelf originated from coast of Alaska to the east, not the Yukon River, and was transported by sea ice and bottom brine water. The populations of sediments from the Chukchi Basin and the base of the Chukchi Sea Slope are the result of sea ice and eddy action. Surface sediments from the western high Arctic Ocean predominantly comprised five populations, and two unique populations with mode diameters of 50–90 μm and 200–400 μm, respectively, were ubiquitous in the glacial and interglacial sediments. It was difficult to distinguish whether these two populations originated from sea ice or icebergs. Therefore, caution should be exercised when using either the > 63 μm or > 250 μm fractions in sediments as a proxy index for iceberg and ice sheet variation in the high Arctic Ocean. |
format |
Article in Journal/Newspaper |
author |
Weiguo, Wang Jichao, Yang Mengwei, Zhao Linsen, Dong Min, Jiang Erhui, Huang |
author_facet |
Weiguo, Wang Jichao, Yang Mengwei, Zhao Linsen, Dong Min, Jiang Erhui, Huang |
author_sort |
Weiguo, Wang |
title |
Spatial variation in grain-size population of surface sediments from northern Bering Sea and western Arctic Ocean: implications for provenance and depositional mechanisms |
title_short |
Spatial variation in grain-size population of surface sediments from northern Bering Sea and western Arctic Ocean: implications for provenance and depositional mechanisms |
title_full |
Spatial variation in grain-size population of surface sediments from northern Bering Sea and western Arctic Ocean: implications for provenance and depositional mechanisms |
title_fullStr |
Spatial variation in grain-size population of surface sediments from northern Bering Sea and western Arctic Ocean: implications for provenance and depositional mechanisms |
title_full_unstemmed |
Spatial variation in grain-size population of surface sediments from northern Bering Sea and western Arctic Ocean: implications for provenance and depositional mechanisms |
title_sort |
spatial variation in grain-size population of surface sediments from northern bering sea and western arctic ocean: implications for provenance and depositional mechanisms |
publisher |
Polar Research Institute of China - PRIC |
publishDate |
2020 |
url |
http://library.arcticportal.org/2729/ http://library.arcticportal.org/2729/1/A2003005.pdf |
long_lat |
ENVELOPE(177.510,177.510,64.734,64.734) ENVELOPE(176.233,176.233,64.882,64.882) ENVELOPE(177.924,177.924,64.489,64.489) ENVELOPE(-171.000,-171.000,68.833,68.833) |
geographic |
Arctic Arctic Ocean Yukon Bering Sea Chukchi Sea Anadyr Anadyr’ Anadyr River Hope Valley |
geographic_facet |
Arctic Arctic Ocean Yukon Bering Sea Chukchi Sea Anadyr Anadyr’ Anadyr River Hope Valley |
genre |
Advances in Polar Science Anadyr Anadyr' Arctic Arctic Arctic Ocean Bering Sea Chukchi Chukchi Sea Ice Sheet Iceberg* Polar Science Polar Science Sea ice Yukon river Alaska Yukon |
genre_facet |
Advances in Polar Science Anadyr Anadyr' Arctic Arctic Arctic Ocean Bering Sea Chukchi Chukchi Sea Ice Sheet Iceberg* Polar Science Polar Science Sea ice Yukon river Alaska Yukon |
op_relation |
http://library.arcticportal.org/2729/1/A2003005.pdf Weiguo, Wang and Jichao, Yang and Mengwei, Zhao and Linsen, Dong and Min, Jiang and Erhui, Huang (2020) Spatial variation in grain-size population of surface sediments from northern Bering Sea and western Arctic Ocean: implications for provenance and depositional mechanisms. Advances in Polar Science, 31 (3). pp. 192-204. |
_version_ |
1784894320277454848 |