Analysis of Acoustic and Oceanographic Data from the Bering Sea
Analysis of Acoustic and Oceanographic Data from the Bering Sea
复制标题
白令海声学和海洋学数据分析
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
D. Mellinger
中科院分区：
文献类型：
--
作者：
K. Stafford;D. Mellinger
关于白令海大型鲸鱼全年分布的资料相对较少。虽然视觉调查提供了北太平洋露脊鲸、座头鲸和长须鲸在夏季出现的信息，但在一年中的其他时间，这种调查对调查这些鲸鱼的存在是无效的，而是使用被动声学。2006年6月至2007年6月，我们在位于沿着70米等深线的三个白令海海洋学系泊（BS-2、BS-4和BS-5）上部署了自主水听器仪器。为了更好地了解影响发声大鲸鱼的分布和栖息地的物理过程，我们将这些物种的物种特异性呼叫的发生与现场和卫星获得的海洋学数据进行了比较，包括冰盖，海面温度和叶绿素a浓度。最东南部的仪器（BS-2）记录了所有三个物种的呼叫季节性。虽然长须鲸和座头鲸的叫声在中间的仪器（BS-4）上相对常见，但在西北部的仪器（BS-5）上记录的它们的叫声很少。季节性冰盖在系泊BS-5上最大，但在2006-07年下降到BS-2。毫不奇怪，当仪器在冰下时，这三种鲸鱼中没有一种被记录下来，尽管其他适应北极的物种，如弓头鲸，胡子海豹和海象在重冰条件下被记录下来。在所有情况下，温度、叶绿素和盐度随地点和时间而变化。BS-2的温度最高，BS-5的最低，叶绿素峰在三个站点有很大的差异。
Abstract Relatively little information exists on the year-round distribution of large whales in the Bering Sea. Although visual surveys have provided information on the summertime occurrence of North Pacific right, humpback and fin whales, during other times of the year such surveys are ineffective to investigate the presence of these whales, and passive acoustics is used instead. We deployed autonomous hydrophone instruments from June 2006-June 2007 on three Bering Sea oceanographic moorings (BS-2, BS-4 and BS-5) located along the 70 m isobath. In order to better understand the physical processes affecting the distribution and habitats of vocal large whales, we compared the occurrence of the species-specific calls of these species with in-situ and satellite-derived oceanographic data, including ice cover, sea surface temperature, and chlorophyll a concentration. The southeastern-most instrument (BS-2) recorded calls from all three species seasonally. While fin and humpback whale calls were relatively common on the middle instrument (BS-4), very few of their calls were recorded on the northwestern most instrument (BS-5). Seasonal ice cover was greatest over mooring BS-5 but in 2006-07 came down as far as BS-2. Unsurprisingly, none of the three whale species were recorded when the instruments were under ice, although other Arctic-adapted species such as bowhead whales, bearded seals and walruses were recorded in heavy ice conditions. In all cases temperature, chlorophyll and salinity varied with location and time of year. Temperatures were highest at BS-2 and lowest at BS-5 and chlorophyll peaks were very different at the three sites.