Multidisciplinary Oceanic Information SysTem (MOIST) INGV Integrated Systems for Marine Environmental Infrastructures (SIIAM) paolo.favali@ingv.it 1 0 999999 SN1 2020 - Hydrophone 2019-10-12T00:00:00+00:00 15.397500,37.547650,-2036.6 <p><b>Web page:</b> <a href='http://www.moist.it/sites/testsite/18/SN12019/hydrophone/75'>MOIST dataset metadata</a> <p><b>Area:</b> East Sicily</p> <p><b>Instrument:</b> SMID seismic digital hydrophone prototype DT-405D(V)1</p> <p><b>Period:</b> October 12, 2019 - on going</p> <p><b>Abstract:</b> The dataset contains seafloor pressure data acquired by the seismic hydrophone installed on NEMO-SN1 observatory in the frequency band 50mHz - 1kHz. Pressure is sampled at 2kHz rate by two A/D converter (12 bit) which supply two data channel (with low, 30dB and high, 60 dB gain). Pressure data are stored in counts units; 1 count corresponds to 0.546 Pa and 0.0172 Pa for low and high gain channel respectively. Absolute time reference is available thanks to GPS data embedded in each packet of data and distributed from land station to seafloor.</p> <p><b>Purpose:</b> The wide frequency range allows to study acoustic ambient noise in the deep water, detect sperm whale and cetaceans and detect seismic signals. It was designed to be able to detect also low frequency hydroacustic signal generated by a tsunami in case this was generated by large seismic event on the seafloor.</p> <p><b>Quality of data:</b> </p>