Relationship between manganese nodule abundance and geologic/topographic factors of the southern KODOS area in the northeastern equatorial Pacific using GIS and probability method SCOPUS KCI

Title
Relationship between manganese nodule abundance and geologic/topographic factors of the southern KODOS area in the northeastern equatorial Pacific using GIS and probability method
Author(s)
Ko, Y.-T.; Min, K.-D.; Park, C.-K.; Kang, J.-K.; Kim, K.-H.; Lee, T.-G.; Kim, H.-S.
KIOST Author(s)
Ko, Youngtak(고영탁)Kim, Hyun Sub(김현섭)
Publication Year
2004
Abstract
The aims of this study are to construct database using geostatistics and Geographic Information System (GIS), and to derive the spatial relationships between manganese nodule abundance and each factor affecting nodule abundance, such as metal grade, slope, aspect, water depth, topography, and acoustic characteristics of the subbottom using the GIS and probability methods. The greater is the copper and nickel grade, the higher is the rating. The distribution pattern of nickel grade is similar to that of copper grade. The slopes are generally less than 3°, excluding seamounts and cliff areas. There is no increment in the rating with increasing slope. The rating is highest for slopes between 2.5 and 3.5° in block B2 and between 3 and 6° in block C1. The topography is classified into five groups: seamount, hill crest, hill slant, hill base or plain, and seafloor basin or valley. The ratings prove lowest for seamount and hill crest. The results of the study show a decrease in the rating with an increase in water depth in the study area. There was a poor relationship between manganese nodule abundance and the thickness of the upper transparent layer in block C1. Using GIS, it is possible to analyze a large amount of data efficiently, and to maximize the practical application, to increase specialization, and to enhance the accuracy of the analyses.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5329
DOI
10.4217/OPR.2004.26.2.219
Bibliographic Citation
Ocean and Polar Research, v.26, no.2, pp.219 - 230, 2004
Publisher
Korea Ocean Research and Development Institute
Subject
bottom topography; economic geology; geostatistics; GIS; manganese nodule; metals industry; nodulation; spatial distribution; Pacific Ocean; Pacific Ocean (Equatorial)
Keywords
Geographic Information System (GIS); Manganese nodule; Probability; Rating
Type
Article
Language
English
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

hydrothermal deposits,geophysical prospecting,underwater seismic,해저열수광상,지구물리탐사,수중음향

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