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ผู้เขียน หัวข้อ: The physics of open-water shellfish aquaculture  (อ่าน 4031 ครั้ง)
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« เมื่อ: มีนาคม 29, 2010, 09:58:38 AM »

The physics of open-water shellfish aquaculture

Craig Stevens a,*, David Plewb, Neil Hartstein c, David Fredriksson d
a NZ National Institute for Water and Atmospheric Research, Greta Point, Wellington, New Zealand
b NZ National Institute for Water and Atmospheric Research, Christchurch, New Zealand
c DHI Water & Environment (M) Sdn Bhd, Wisma Perindustrian, Jalan Istiadat, Likas, 88400 Kota Kinabalu Sabah, Malaysia
d Department of Naval Architecture and Ocean Engineering, U.S. Naval Academy, 590 Holloway Road, 11D Annapolis, MD 21402, USA

Aquacultural Engineering 38 (2008) 145–160

Keywords: Shellfish; Physics; Oceanography; Longline; Mussel farm; New Zealand; Waves; Currents

Abstract
Aquaculture of shellfish species is expanding in many countries. Limitations on, and competition for, inshore water space is making offshore shellfish developments more attractive. Here we review issues relating to the design and mechanics of shellfish longline structures in relation to the offshore marine environment. Two main facets are explored: (i) the effect of the flow (waves and currents) on the farm and (ii) the reverse perspective of the impact of the farm on the flow. Because these systems are relatively new, we first examine similar systems, both natural (kelp beds) and man-made (floating breakwaters, fish farms). Techniques for measuring both the local oceanography and the structural response are listed along with new approaches for measuring important properties. A number of future applied research topics are identified as being a key to advancing the industry, including issues like
mooring design, vertical drag coefficients, wave–current interaction, stratification and influence on fauna.
# 2008 Elsevier B.V. All rights reserved.
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