Laboratory Measurements to Image Endobenthos and Bioturbation with a High-Frequency 3D Seismic Lander

Autor: Inken Schulze, Dennis Wilken, Michael L. Zettler, Mayya Gogina, Mischa Schönke, Peter Feldens
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Geosciences, Vol 11, Iss 12, p 508 (2021)
Druh dokumentu: article
ISSN: 2076-3263
DOI: 10.3390/geosciences11120508
Popis: The presented 3D seismic system operates three transducers (130 kHz) from a stationary lander and allows non-destructive imaging of small-scale objects within the top decimeters of silty sediments, covering a surface area of 0.2 m2. In laboratory experiments, samples such as shells, stones, and gummy worms of varied sizes (down to approx. 1 cm diameter) could be located in the 3D seismic cube to a depth of more than 20 cm and differentiated by a reflected amplitude intensity and spatial orientation. In addition, simulated bioturbation structures could be imaged. In a practical application, the system allows to determine the abundance of endobenthos and its dynamic in muddy deposits in-situ and thus identify the intensity of local bioturbation.
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