UNSPECIFIED. (2004) A direction-sensitive underwater blast detector and its application for managing blast fishing. MARINE POLLUTION BULLETIN, 49 (11-12). pp. 964-973. ISSN 0025-326X

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Abstract

Little is known about the spatial and temporal distribution of blast fishing which hampers enforcement against this activity. We have demonstrated that a triangular array of hydrophones 1 m apart is capable of detecting blast events whilst effectively rejecting other sources of underwater noise such as snapping shrimp and nearby boat propellers. A total of 13 blasts were recorded in Sepangor bay, North of Kota Kinabalu, Sabah, Malaysia from 7th to 15th July 2002 at distances estimated to be up to 20 km, with a directional uncertainty of 0.2degrees. With such precision, a network of similar hydrophone arrays has potential to locate individual blast events by triangulation to within 30 m at a range of 10 km. (C) 2004 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Subjects:	G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > QH Natural history > QH301 Biology
Journal or Publication Title:	MARINE POLLUTION BULLETIN
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
ISSN:	0025-326X
Date:	December 2004
Volume:	49
Number:	11-12
Number of Pages:	10
Page Range:	pp. 964-973
Identification Number:	10.1016/j.marpolbol.2004.06.022
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/7549

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