Chemical composition of sediments from marine shallow-water hydrothermal mounds in Wakamiko submarine crater revealed by multiple prompt gamma-ray analysis

Multiple prompt gamma-ray analysis (MPGA), a new radionuclide quantification method with high energy resolution, was applied to sediments from a marine shallow-water hydrothermal mound. Surface sediments around mounds were collected from the Wakamiko submarine crater located in Kagoshima Bay, southw...

Full description

Saved in:
Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2012-02, Vol.291 (2), p.341-346
Main Authors: Shozugawa, Katsumi, Matsuo, Motoyuki, Sano, Yuji, Toh, Yosuke, Murakami, Yukihiro, Furutaka, Kazuyoshi, Koizumi, Mitsuo, Kimura, Atsushi, Hara, Kaoru, Kin, Tadahiro, Oshima, Masumi, Nakamura, Shoji, Harada, Hideo
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Detectors
Diagnostic Radiology
Gamma rays
Hadrons
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Sediments (Geology)
Submarine boats
Sulfur compounds
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Multiple prompt gamma-ray analysis (MPGA), a new radionuclide quantification method with high energy resolution, was applied to sediments from a marine shallow-water hydrothermal mound. Surface sediments around mounds were collected from the Wakamiko submarine crater located in Kagoshima Bay, southwest Japan, where the hydrothermal system was different from those at other marine shallow-water hydrothermal mounds. All samples were desalted and MPGA measurements were performed for 4,500 s (real time). Event data were obtained using eight Canberra-Eurisys CLOVER Ge detectors. The size of the list data that included all multiple events was from 1.19 to 19.2 GB. We could obtain concentrations of 32 S, 55 Mn, 75 As, 157 Gd, 39 K, 149 Sm, 56 Fe, and 85 Rb with high sensitivity by MPGA. Furthermore, 32 S, 85 Rb, and 55 Mn have characteristic concentrations only at a mound, not at control sampling sites, suggesting that sediments were sulfurated by magmatic fluids at this mound.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-011-1347-9