| 中华白海豚和东亚窄脊江豚回声定位信号分析与比较 |
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| 引用本文： | 王月云,王先艳,徐晓辉,宋忠长,杨武夷,张宇.中华白海豚和东亚窄脊江豚回声定位信号分析与比较[J].声学学报,2021,46(3):423-430. |
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| 作者姓名： | 王月云 王先艳 徐晓辉 宋忠长 杨武夷 张宇 |
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| 作者单位： | 1. 集美大学诚毅学院 厦门 361003; |
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| 基金项目： | 国家重点研发计划项目(2018YFC1407505,2018YFC1407504)、厦门市海洋与渔业发展专项项目(20CZB015HJ01)、福建省教育厅中青年教师教育科研项目(JT180873)、国家自然基金面上项目(12074323)和广东省水利科技创新项目(2020-16)资助 |
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| 摘 要： | 为了增进珍稀齿鲸物种的了解和保护,对中华白海豚(Sousa chinensis)和东亚窄脊江豚(Neophocaena asiaeorientalis sunmeri)的回声定位信号特性进行了分析和比较。通过船只观测与声学监听的方式对厦门海域中华白海豚和东亚窄脊江豚的回声定位信号进行了调查,并对其声学参数进行了统计和对比。结果表明:中华白海豚回声定位信号具有持续时间短、高频、宽频带的特征;相较而言,东亚窄脊江豚则呈现时长较长、高频、窄频带的特点;声学参数统计上,两者在持续时间、中心频率、-10 dB带宽等指标上具有明显的差异性。
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| 关 键 词： | 生物声学 回声定位 声信号特征 无源声学监听 |
| 收稿时间： | 2020-03-16 |
Analysis of echolocation from Indo-Pacific humpback dolphin (Sousa chinensis) and finless porpoise (Neophocaena asiaeorientalis sunmeri) |
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| Affiliation: | 1. Chengyi University College, Jimei Universtiy, Xiamen 361003;2. Third Institute of Oceanography, Ministry of Natural Resources China, Xiamen 361000;3. Key Laboratory of Underwater Acoustic Communication and Marine Information Technology Ministry of Education, Xiamen University, Xiamen 361000;4. College of Ocean and Earth Sciences, Xiamen University, Xiamen 361000 |
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| Abstract: | To gain a deeper understanding on odontocetes click and develop smart protection strategy for endangered species,clicks of Indo-pacific humpback dolphins(Sousa chinensis) and finless porpoises(Neophocaena asiaeorientalis sunmeri) were recorded and analyzed.Passive acoustic monitoring was used to record the clicks emitted by Indo-Pacific humpback dolphins and finless porpoises during boat-based field surveys in the Xiamen waters.Subsequent analysis shows:clicks emitted by Indo-Pacific humpback dolphins are characterized by short duration,high frequency,and broadband bandwidth.Comparatively,finless porpoise' clicks have a relatively longer duration,higher peak frequency,and narrower bandwidth.Duration,centroid frequency and-10 dB bandwidth of clicks are significantly different between the two species. |
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