Acoustic tomography of a coastal front in Haro Strait, British Columbia
Acoustic tomography of a coastal front in Haro Strait, British Columbia
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DOI：
10.1121/1.427046
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发表时间：
1999-06
影响因子：
2.4
通讯作者：
P. Elisseeff;H. Schmidt;Marvin L. Johnson;D. Herold;N. Chapman;M. McDonald
中科院分区：
文献类型：
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作者：
P. Elisseeff;H. Schmidt;Marvin L. Johnson;D. Herold;N. Chapman;M. McDonald
最近在（加拿大）不列颠哥伦比亚省的哈洛海峡进行了一项实验，以验证声学聚焦海洋学取样的概念。四个16元素的垂直接收器阵列系泊在河口和潮汐强迫驱动的海岸前的位置。在五个星期的时间里，各种信号从一个阵列传输到另一个阵列，从一个移动源传输到阵列。断层扫描信号在宽频带（150 Hz至15 kHz）上传输。哈洛海峡数据集的新颖之处在于其不寻常的层析特征：距离短（不到3公里），声速扰动小（2至3米/秒），海流相对较强（3.5千吨）。灯泡产生的宽带声信号在本文中使用结合当地的非声学测量，以图像的三维声速和水流场内的系泊阵列封闭的水体。积分数据和局部数据的结合使用，使计算结果具有重要意义。
An experiment validating the concept of acoustically focused oceanographic sampling (AFOS) was recently implemented in Haro Strait, British Columbia (Canada). Four 16-element vertical receiver arrays were moored around the location of a coastal front driven by estuarine and tidal forcing. Various signals were transmitted from array to array and from a moving source to the arrays over a period of five weeks. Tomographic signals were transmitted over a wide frequency band (150 Hz to 15 kHz). The novelty of the Haro Strait data set resides in its unusual tomographic features: ranges are short (less than 3 km), sound speed perturbations are small (2 to 3 m/s), and currents are relatively strong (3.5 kts). Light-bulb-generated wideband acoustic signals are used in this paper in conjunction with local nonacoustic measurements in order to image the three-dimensional sound speed and current fields within the water mass enclosed by the moored arrays. The combined use of integral and local data leads to a significa...