Fang, Yin-YingYin-YingFangShih, Chen-YuChen-YuShihTsai, Meng-FanMeng-FanTsaiPeng, Chiao-MingChiao-MingPengCHI-FANG CHENZhong, Ming-RuMing-RuZhongKuo, Ting-JungTing-JungKuo2024-10-292024-10-292024-01-019789090390581https://www.scopus.com/record/display.uri?eid=2-s2.0-85205363462&origin=resultslisthttps://scholars.lib.ntu.edu.tw/handle/123456789/722567The underwater soundscape near ports is significantly affected by ship-generated noise, emanating from vessels both nearby and at a distance. Before commencing extensive passive acoustic monitoring in this area, the use of underwater acoustic modeling is imperative. Its purpose is to pinpoint the ideal monitoring site enabling precise capture of specific acoustic events, such as fish or cetacean vocalizations. Initially, this study contrasts simulation outcomes that consider seasonal variations and diurnal/nocturnal fluctuations in high and low-frequency acoustic transmissions at Taipei ports in Taiwan. The comprehensive evaluation highlights Taipei Port’s superiority for monitoring purposes, covering the coastal area and capturing sounds from ships and fish. Consequently, field measurements were taken near Tamsui Artificial Reef and Tamsui River for one week in April and July of 2023. Signal processing unveiled a distinct pattern of shipping noise between 3 am to 6 pm. Additionally, periodic fish calls occurred within the 500 Hz to 1000 Hz frequency range, primarily observed from 4 pm to 6 pm. This research aims to conduct in-situ measurements through acoustic signal processing simulations to identify the optimal experimental site for monitoring ambient underwater soundscapes. This endeavor is pivotal in enhancing laboratory efficiency and cost-effectiveness, particularly from the perspective of underwater passive acoustic monitoring.falsefish vocalizationsin-situ measurementsPassive Acoustic Monitoring (PAM)ship noiseconference paper2-s2.0-85205363462