Seabed Mapping Using Shipboard Multibeam Acoustic Data for Assessing the Spatial Distribution of Ferromanganese Crusts on Seamounts in the Western Pacific SCIE SCOPUS

Cited 0 time in WEB OF SCIENCE Cited 0 time in Scopus
Title
Seabed Mapping Using Shipboard Multibeam Acoustic Data for Assessing the Spatial Distribution of Ferromanganese Crusts on Seamounts in the Western Pacific
Author(s)
Joo, Jongmin; Kim, Seung-Sep; Choi, JeeWoong; Pak, Sang-Joon; Ko, Youngtak; Son, Seung-Kyu; Moon, Jai-woon; Kim, Jonguk
KIOST Author(s)
Pak, Sang Joon(박상준)Ko, Youngtak(고영탁)Son, Seung Kyu(손승규)Moon, Jai Woon(문재운)Kim, Jonguk(김종욱)
Publication Year
2020-02
Abstract
Cobalt-rich ferromanganese crusts (Fe-Mn crusts), potential economic resources for cobalt, nickel, platinum, and other raremetals, are distributed on the surface of seamounts, ridges, and plateaus. Distribution of Fe-Mn crust deposits and their geomorphological characteristics are prerequisites to selecting possible mining sites and to predicting the environmental impact of deep-sea mining activity. Here, we map the spatial distribution of Fe-Mn crust deposits on seamount summits and flanks in the Western Pacific using shipboard multibeam echo sounder (MBES) data and seafloor images from a deep-towed camera system (DCS) and evaluate the relationship between acoustic backscatter variations and the occurrence of Fe-Mn crusts. We find a positive correlation between high backscatter intensity, steep seabed slope gradients, and the occurrence of Fe-Mn crusts. However, our analysis was not effective to distinguish the spatial boundary between several seabed types that occur over small areas in mixed seabed zones, particularly where transition zones and discontinuous seabed types are present. Thus, we conclude that MBES data can be a valuable tool for constraining spatial distribution of Fe-Mn crust deposits over a large exploration area.
ISSN
2075-163X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/38751
DOI
10.3390/min10020155
Bibliographic Citation
MINERALS, v.10, no.2, 2020
Publisher
MDPI
Subject
BACKSCATTER INTENSITY; FLOOR BACKSCATTER; ANGULAR RESPONSE; NODULE ABUNDANCE; BATHYMETRY DATA; CLASSIFICATION; ROUGHNESS; SAND; EXPLORATION; SUBSTRATE
Keywords
ferromanganese crust; seamounts; shipboard multibeam survey; acoustic backscatter intensity; seafloor observation; seabed classification
Type
Article
Language
English
Document Type
Article
Publisher
MDPI
Related Researcher
Research Interests

Deep seabed exploration,Geochemistry,심해저자원탐사,지화학

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse