RAPID: Nearshore Sound Propagation of and Species Response to Active-Source Seismic Surveys

在沿卡斯卡迪亚俯冲带进行沿着高能地球物理调查期间，将测量声压和质点运动，以调查声音对鱼类和无脊椎动物的潜在影响。使用矢量传感器阵列，这是一种用于检测水中声音的水下听音装置，PI将使用这些数据来评估岩鱼（鱼属），邓杰尼斯蟹和长鼻鳐对地球物理调查产生的声音的行为反应。 这项调查提供了一个独特的机会来描述海洋噪音和调查东北太平洋近岸物种的反应。 该项目的成果将具有科学意义，有助于增进对声传播能量学和海洋物种对地球物理调查的反应的理解。矢量传感器阵列将用于提供声粒子运动和压力幅度水平的现场测量，作为地震调查引起的环境声应力的量化描述。这种方法将使PI能够评估生物声学声景在地震勘测期间和之后相对于勘测前条件的变化。这项研究将是一个机会，以获得宝贵的和相对独特的近岸声学数据，从地震声源，可用于验证和改善声音传播模型，在这些具有挑战性的近岸沿海地区。这一奖项反映了NSF的法定使命，并已被认为是值得的支持，通过评估使用该基金会的智力价值和更广泛的影响审查标准。

During a high energy geophysical survey along the Cascadia Subduction Zone, measurements of sound pressure and particle motion will be made to investigate potential impacts of sound on fishes and invertebrates. Using a vector sensor array, which is an underwater listening device used to detect sounds in water, the PIs would use this data to assess behavioral responses of rockfishes (Sebastes spp), Dungeness crab, and longnose skate to the sound resulting from the geophysical survey. This survey provides a unique opportunity to characterize ocean noise and investigate the responses of nearshore Northeast Pacific species. The results of this project would be of scientific interest to advance understanding of the energetics of acoustic propagation and responses of marine species to geophysical surveys.A vector sensor array will be used to provide in-situ measurements of acoustic particle motion and pressure amplitude levels as a quantifiable description of the environmental acoustic stress induced by the seismic survey. This approach will enable the PIs to evaluate changes in the bioacoustic soundscape during and after the seismic survey relative to pre-survey conditions. This study will be an opportunity to obtain valuable and relatively unique nearshore acoustic data from a seismic sound source that can be used to validate and improve sound propagation models in these challenging nearshore coastal areas.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.