Long Transect Seafloor Seismic Array: A Component of SAMSON (Sources of Ambient Micro Seismic Oceanic Noise).

摘要

During the SAMSON experiment, an array of at least twelve seafloor instruments was deployed to measure ambient seismo-acoustic noise. SAMSON is a large, coordinated experiment featuring several land and seafloor seismic arrays directed at studying the generation and propagation of very low frequency (1 mHz to 1 Hz) ambient noise. Surface waves were measured at the coast by the FRF array (established by NCEL), by a pressure array near the coast and in deep water with wave buoys which are part of the ONR funded SWADE program. The seismic array extended from shallow into deep water from the North Carolina Coast. Data from the array was incoherently processed and principally used to study the evolution of the seafloor noise field as a function of distance from the coast and with depth. The array also serves to tie together measurements made by the three coherent arrays: the first on land, the second in the shallow water very near the coast and the third in deep water beyond the shelf. Some instruments of the incoherent array were elements of the two marine coherent arrays Seismic arrays, SAMSON, Ambient noise, Seismic-acoustic data.