Characteristics of sediment resuspension on a deep abyssal plain in the Eastern Tropical Pacific Ocean SCIE SCOPUS

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Title
Characteristics of sediment resuspension on a deep abyssal plain in the Eastern Tropical Pacific Ocean
Author(s)
Kim, Minkyoung; Kim, Hyung Jeek; Ko, Ara; Yoo, Chan Min; Ju, Se-Jong; Hwang, Jeomshik
KIOST Author(s)
Kim, Hyung Jeek(김형직)Yoo, Chan Min(유찬민)Ju, Se Jong(주세종)
Alternative Author(s)
김민경; 김형직; 유찬민; 주세종
Publication Year
2021-09
Abstract
We examined the biogenic and lithogenic particle composition and radiocarbon content of sinking particulate organic carbon to investigate sediment resuspension and its contribution to sinking particles on the deep abyssal plain of the Eastern Tropical Pacific Ocean. Samples were collected using sediment traps from August 2011 to July 2012 at depths of 4500 and 4950 m (50 m above the seafloor); above and within the benthic nepheloid layer (BNL), respectively. Biogenic particles derived from export production were the major source of sinking particles and their flux showed a unimodal temporal distribution, with larger values between February and April. At a depth of 4500 m, the lithogenic material flux was slightly greater than, or similar to, the flux of atmospheric dust deposition. In comparison, lithogenic material and excess Mn consistently showed a greater contribution to resuspended particles at 4950 m. The lithogenic material flux was proportional to the biogenic flux. These observations imply that resuspended particles exist at a background concentration in the BNL throughout the year, and are scavenged by sinking biogenic particles, especially during the high flux period.
ISSN
1385-1101
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41530
DOI
10.1016/j.seares.2021.102085
Bibliographic Citation
JOURNAL OF SEA RESEARCH, v.175, 2021
Publisher
Elsevier BV
Subject
DISSOLVED INORGANIC RADIOCARBON; PARTICULATE ORGANIC-CARBON; EQUATORIAL PACIFIC; SINKING PARTICLES; FLUX ATTENUATION; SEA; VARIABILITY; EXPORT; TRANSPORT; MANGANESE
Keywords
Sediment trap; Radiocarbon; Abyssal plain; Sinking particles; Eastern Tropical Pacific Ocean
Type
Article
Language
English
Document Type
Article
Publisher
Elsevier BV
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