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Automated Gas Bubble Imaging at Sea Floor – a New Method of in Situ Gas Flux Quantification : Volume 7, Issue 1 (09/02/2010)

By Thomanek, K.

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Book Id: WPLBN0003988395
Format Type: PDF Article :
File Size: Pages 44
Reproduction Date: 2015

Title: Automated Gas Bubble Imaging at Sea Floor – a New Method of in Situ Gas Flux Quantification : Volume 7, Issue 1 (09/02/2010)  
Author: Thomanek, K.
Volume: Vol. 7, Issue 1
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Zielinski, O., Sahling, H., Thomanek, K., & Bohrmann, G. (2010). Automated Gas Bubble Imaging at Sea Floor – a New Method of in Situ Gas Flux Quantification : Volume 7, Issue 1 (09/02/2010). Retrieved from http://worldlibrary.net/


Description
Description: University of Applied Sciences Bremerhaven, An der Karlstadt 8, 27568 Germany. Photo-optical systems are common in marine sciences and have been extensively used in coastal and deep-sea research. However, due to technical limitations in the past photo images had to be processed manually or semi-automatically. Recent advances in technology have rapidly improved image recording, storage and processing capabilities which are used in a new concept of automated in situ gas quantification by photo-optical detection. The design for an in situ high-speed image acquisition and automated data processing system is reported (Bubblemeter). New strategies have been followed with regards to back-light illumination, bubble extraction, automated image processing and data management. This paper presents the design of the novel method, its validation procedures and calibration experiments. The system will be positioned and recovered from the sea floor using a remotely operated vehicle (ROV). It is able to measure bubble flux rates up to 10 L/min with a maximum error of 33% for worst case conditions. The Bubblemeter has been successfully deployed at a water depth of 1023 m at the Makran accretionary prism offshore Pakistan during a research expedition with R/V Meteor in November 2007.

Summary
Automated gas bubble imaging at sea floor – a new method of in situ gas flux quantification

Excerpt
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