Effects of River Discharge and Sediment Load on Sediment Plume Behaviors in a Coastal Region: The Yukon River, Alaska and the Bering Sea
In the Bering Sea around and off the Yukon River delta, surface sediment plumes are markedly formed by glacier-melt and rainfall sediment runoffs of the Yukon River, Alaska, in June– September. The discharge and sediment load time series of the Yukon River were obtained at the lowest gauging station...
Published in: | Hydrology |
---|---|
Main Authors: | , , , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2021
|
Subjects: | |
Online Access: | https://doi.org/10.3390/hydrology8010045 |
id |
ftmdpi:oai:mdpi.com:/2306-5338/8/1/45/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2306-5338/8/1/45/ 2023-08-20T04:05:36+02:00 Effects of River Discharge and Sediment Load on Sediment Plume Behaviors in a Coastal Region: The Yukon River, Alaska and the Bering Sea Kazuhisa A. Chikita Tomoyuki Wada Isao Kudo Sei-Ichi Saitoh Mitsuhiro Toratani agris 2021-03-12 application/pdf https://doi.org/10.3390/hydrology8010045 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/hydrology8010045 https://creativecommons.org/licenses/by/4.0/ Hydrology; Volume 8; Issue 1; Pages: 45 Yukon River plume river discharge sediment load flocculation plunging underflow Text 2021 ftmdpi https://doi.org/10.3390/hydrology8010045 2023-08-01T01:16:03Z In the Bering Sea around and off the Yukon River delta, surface sediment plumes are markedly formed by glacier-melt and rainfall sediment runoffs of the Yukon River, Alaska, in June– September. The discharge and sediment load time series of the Yukon River were obtained at the lowest gauging station of US Geological Survey in June 2006–September 2010. Meanwhile, by coastal observations on boat, it was found out that the river plume plunges at a boundary between turbid plume water and clean marine water at the Yukon River sediment load of more than ca. 2500 kg/s. Grain size analysis with changing salinity (‰) for the river sediment indicated that the suspended sediment becomes coarse at 2 to 5‰ by flocculation. Hence, the plume’s plunging probably occurred by the flocculation of the Yukon suspended sediment in the brackish zone upstream of the plunging boundary, where the differential settling from the flocculation is considered to have induced the turbid water intrusion into the bottom layer. Text Bering Sea glacier Yukon river Alaska Yukon MDPI Open Access Publishing Bering Sea Yukon Hydrology 8 1 45 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Yukon River plume river discharge sediment load flocculation plunging underflow |
spellingShingle |
Yukon River plume river discharge sediment load flocculation plunging underflow Kazuhisa A. Chikita Tomoyuki Wada Isao Kudo Sei-Ichi Saitoh Mitsuhiro Toratani Effects of River Discharge and Sediment Load on Sediment Plume Behaviors in a Coastal Region: The Yukon River, Alaska and the Bering Sea |
topic_facet |
Yukon River plume river discharge sediment load flocculation plunging underflow |
description |
In the Bering Sea around and off the Yukon River delta, surface sediment plumes are markedly formed by glacier-melt and rainfall sediment runoffs of the Yukon River, Alaska, in June– September. The discharge and sediment load time series of the Yukon River were obtained at the lowest gauging station of US Geological Survey in June 2006–September 2010. Meanwhile, by coastal observations on boat, it was found out that the river plume plunges at a boundary between turbid plume water and clean marine water at the Yukon River sediment load of more than ca. 2500 kg/s. Grain size analysis with changing salinity (‰) for the river sediment indicated that the suspended sediment becomes coarse at 2 to 5‰ by flocculation. Hence, the plume’s plunging probably occurred by the flocculation of the Yukon suspended sediment in the brackish zone upstream of the plunging boundary, where the differential settling from the flocculation is considered to have induced the turbid water intrusion into the bottom layer. |
format |
Text |
author |
Kazuhisa A. Chikita Tomoyuki Wada Isao Kudo Sei-Ichi Saitoh Mitsuhiro Toratani |
author_facet |
Kazuhisa A. Chikita Tomoyuki Wada Isao Kudo Sei-Ichi Saitoh Mitsuhiro Toratani |
author_sort |
Kazuhisa A. Chikita |
title |
Effects of River Discharge and Sediment Load on Sediment Plume Behaviors in a Coastal Region: The Yukon River, Alaska and the Bering Sea |
title_short |
Effects of River Discharge and Sediment Load on Sediment Plume Behaviors in a Coastal Region: The Yukon River, Alaska and the Bering Sea |
title_full |
Effects of River Discharge and Sediment Load on Sediment Plume Behaviors in a Coastal Region: The Yukon River, Alaska and the Bering Sea |
title_fullStr |
Effects of River Discharge and Sediment Load on Sediment Plume Behaviors in a Coastal Region: The Yukon River, Alaska and the Bering Sea |
title_full_unstemmed |
Effects of River Discharge and Sediment Load on Sediment Plume Behaviors in a Coastal Region: The Yukon River, Alaska and the Bering Sea |
title_sort |
effects of river discharge and sediment load on sediment plume behaviors in a coastal region: the yukon river, alaska and the bering sea |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/hydrology8010045 |
op_coverage |
agris |
geographic |
Bering Sea Yukon |
geographic_facet |
Bering Sea Yukon |
genre |
Bering Sea glacier Yukon river Alaska Yukon |
genre_facet |
Bering Sea glacier Yukon river Alaska Yukon |
op_source |
Hydrology; Volume 8; Issue 1; Pages: 45 |
op_relation |
https://dx.doi.org/10.3390/hydrology8010045 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/hydrology8010045 |
container_title |
Hydrology |
container_volume |
8 |
container_issue |
1 |
container_start_page |
45 |
_version_ |
1774716158442733568 |