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Main Title: A System for Retrieval and Incubation of Benthic Sediment Cores at In Situ Ambient Pressure and under Controlled or Manipulated Environmental Conditions
Author(s): Jackson, Keith
Witte, Ursula
Chalmers, Stewart
Anders, Erik
Parkes, John
Type: Article
Language Code: en
Abstract: The investigation of benthic biodiversity and biogeochemical processes in the deep sea is complicated by the need to conduct experiments at in situ pressures. Recovery of sediment samples to the surface without maintaining full-depth ambient pressure may damage the organisms that are of interest or cause physiological changes that could influence the processes being studied. It is possible to carry out in situ experiments using remotely operated vehicles (ROVs) or lander systems. However, the costs and complexity of ROV operations are significant and, for both ROVs and landers, the complexity and repeatability of the experiments are subject to the limitations imposed by these platforms. A system is described—the Multi-Autoclave Corer Experiment (MAC-EXP)—that has been developed with the aim of offering a new experimental approach to investigators. The MAC-EXP system is designed to retrieve sediment cores from depths down to 3500 m and to seal them into pressure chambers before being recovered so that they are maintained at their normal ambient pressure. After recovery the core chambers can be connected to a laboratory incubation system that allows for experimentation on the sediment without loss of pressure and under controlled conditions of temperature and oxygen concentration. The system is relatively low cost when compared to ROV systems and can be deployed using methods and equipment similar to those used for routine deployments of small unpressurized multicorers. The results of sea trials are detailed.
Issue Date: 2017
Date Available: 14-Nov-2019
DDC Class: 550 Geowissenschaften
Subject(s): sampling
deep sea
remotely operated vehicles
Multi-Autoclave Corer Experiment
Journal Title: Journal of Atmospheric and Oceanic Technology
Publisher: American Meteorological Society
Publisher Place: Boston, Mass
Volume: 34
Issue: 5
Publisher DOI: 10.1175/jtech-d-16-0248.1
Page Start: 983
Page End: 1000
EISSN: 1520-0426
ISSN: 0739-0572
Appears in Collections:FG Kontinuumsmechanik und Materialtheorie » Publications

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