Effects of macrofauna on acoustic backscatter from the seabed: Field manipulations in West Sound, Orcas Island, Washington, U. S. A.

Robert F. L. self; Patrick AHerarn; Peter A. Jumars

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Effects of macrofauna on acoustic backscatter from the seabed: Field manipulations in West Sound, Orcas Island, Washington, U. S. A.

机译：大型动物对海床声反向散射的影响：美国华盛顿州奥卡斯岛西声的野外操纵。

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Previous observation with a bottom-mounted, radially scanning sonar (BAMS) at 40 kHz suggested that macrofaunal activities influence low-angle, acoustic backscatter from seafloor sediments. In order to test that possibility experimentally, we measured and modeled time series of backscatter strength at both 40 and 300 kHz prior to manipulation and then introduced several macrofaunal species at known abundances to randomly selected locations within the ensonified area. We worked in West Sound, Orcas Island, Washington, at a water depth of 20.4 m and for the more Frequently recorded 40-kHz series extracted effects by the time-series method known as "interven- Tion analysis," wherein the intervention was the experimental alteration.

机译：以前使用40 kHz的底部安装的径向扫描声纳（BAMS）进行的观察表明，大型动物活动影响着海底沉积物的低角度，声学反向散射。为了通过实验测试这种可能性，我们在操作之前在40 kHz和300 kHz下测量并建模了反向散射强度的时间序列，然后将已知丰度的几种大型动物物种引入到声波区域内的随机选择位置。我们在华盛顿州Orcas岛的West Sound的水深20.4 m处进行工作，并通过称为“干预分析”的时间序列方法更频繁地记录了40 kHz序列提取的效果，其中干预措施是实验性变更。

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《Journal of Marine Research》 |2001年第6期|p.991-1020|共30页
作者
Robert F. L. self; Patrick AHerarn; Peter A. Jumars;
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收录信息美国《科学引文索引》(SCI);
原文格式 PDF
正文语种 eng
中图分类水文科学（水界物理学）;
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6. Effects of Macrofauna on Acoustic Backscatter from the Seabed: Field Manipulations in West Sound, Orcas Island, WA, USA [R] . Self, R. F. , Hearn, P. A. , Jumars, P. A. , 2001

机译：大型底栖动物对海底声背向散射的影响：美国西澳大利亚州奥卡斯岛西部海域的野外操作

Effects of macrofauna on acoustic backscatter from the seabed: Field manipulations in West Sound, Orcas Island, Washington, U. S. A.

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