The University of Southampton
University of Southampton Institutional Repository
Warning ePrints Soton is experiencing an issue with some file downloads not being available. We are working hard to fix this. Please bear with us.

Deep-Sea Laser-Induced Breakdown Spectroscopy and its Application to Hydrothermal Mineral Surveys in the Okinawa Trough

Deep-Sea Laser-Induced Breakdown Spectroscopy and its Application to Hydrothermal Mineral Surveys in the Okinawa Trough
Deep-Sea Laser-Induced Breakdown Spectroscopy and its Application to Hydrothermal Mineral Surveys in the Okinawa Trough
Laser-induced breakdown spectroscopy (LIBS) is a form of atomic emission spectroscopy that uses a focused laser-pulse to create a plasma of excited material that can be used to determine the multi-elemental composition of targets in situ. In this work, the authors describe the development of a 3000m depth rated LIBS instrument and its deployments from a remotely operated vehicle (ROV) at depths of more than 1000m. Exemplary measurements of the multi-element composition of both seawater and mineral deposits made at an active hydrothermal vent field in the Okinawa trough will be presented and methods developed to process the measurements made by the instrument will be discussed. This is the first application of LIBS to oceanographic studies and the technique is currently one of the few methods available to perform in situ multi-element analysis underwater at oceanic pressures. Through integration with platforms such as underwater vehicles, drilling systems and subsea observatories, it is hoped that this technology can contribute to more efficient scientific surveys of the deep-sea environment.
4805 Biogeochemical cycles, processes, and modeling, OCEANOGRAPHY: BIOLOGICAL AND CHEMICALDE: 4894 Instruments, sensors, and techniques, OCEANOGRAPHY: BIOLOGICAL AND CHEMICALDE: 4262 Ocean observing systems, OCEANOGRAPHY: GENERALDE: 4294 Instruments and techniques, OCEANOGRAPHY: GENERAL
Thornton, B.
8293beb5-c083-47e3-b5f0-d9c3cee14be9
Takahashi, T.
d49df4df-ae10-45e4-a86c-c07efb7dc889
Sato, T.
a89883c2-4de2-45e2-a8f7-765ae674f597
Sakka, T.
fd41ffee-1abd-46cb-99dc-94bb96aecc38
Ohki, T.
e8962f22-9e79-46b8-8b97-8a99c3dc47d4
Ohki, K.
0591f5f7-dcf3-45b0-a6ee-9b026b7b82a6
Thornton, B.
8293beb5-c083-47e3-b5f0-d9c3cee14be9
Takahashi, T.
d49df4df-ae10-45e4-a86c-c07efb7dc889
Sato, T.
a89883c2-4de2-45e2-a8f7-765ae674f597
Sakka, T.
fd41ffee-1abd-46cb-99dc-94bb96aecc38
Ohki, T.
e8962f22-9e79-46b8-8b97-8a99c3dc47d4
Ohki, K.
0591f5f7-dcf3-45b0-a6ee-9b026b7b82a6

Thornton, B., Takahashi, T., Sato, T., Sakka, T., Ohki, T. and Ohki, K. (2016) Deep-Sea Laser-Induced Breakdown Spectroscopy and its Application to Hydrothermal Mineral Surveys in the Okinawa Trough. American Geophysical Union, Ocean Sciences Meeting 2016, 52.

Record type: Article

Abstract

Laser-induced breakdown spectroscopy (LIBS) is a form of atomic emission spectroscopy that uses a focused laser-pulse to create a plasma of excited material that can be used to determine the multi-elemental composition of targets in situ. In this work, the authors describe the development of a 3000m depth rated LIBS instrument and its deployments from a remotely operated vehicle (ROV) at depths of more than 1000m. Exemplary measurements of the multi-element composition of both seawater and mineral deposits made at an active hydrothermal vent field in the Okinawa trough will be presented and methods developed to process the measurements made by the instrument will be discussed. This is the first application of LIBS to oceanographic studies and the technique is currently one of the few methods available to perform in situ multi-element analysis underwater at oceanic pressures. Through integration with platforms such as underwater vehicles, drilling systems and subsea observatories, it is hoped that this technology can contribute to more efficient scientific surveys of the deep-sea environment.

This record has no associated files available for download.

More information

Published date: 1 February 2016
Keywords: 4805 Biogeochemical cycles, processes, and modeling, OCEANOGRAPHY: BIOLOGICAL AND CHEMICALDE: 4894 Instruments, sensors, and techniques, OCEANOGRAPHY: BIOLOGICAL AND CHEMICALDE: 4262 Ocean observing systems, OCEANOGRAPHY: GENERALDE: 4294 Instruments and techniques, OCEANOGRAPHY: GENERAL

Identifiers

Local EPrints ID: 450243
URI: http://eprints.soton.ac.uk/id/eprint/450243
PURE UUID: c3093767-29f7-440c-99b2-2a31fae4a1aa

Catalogue record

Date deposited: 16 Jul 2021 16:37
Last modified: 16 Jul 2021 16:37

Export record

Contributors

Author: B. Thornton
Author: T. Takahashi
Author: T. Sato
Author: T. Sakka
Author: T. Ohki
Author: K. Ohki

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×