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Installation of ocean bottom bases for observation of seafloor crustal movement

Fujimoto, H ; Segawa, J ; Furuta, T ; Murakami, H

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Título:
Installation of ocean bottom bases for observation of seafloor crustal movement
Autor: Fujimoto, H ; Segawa, J ; Furuta, T ; Murakami, H
Assuntos: Marine
Notas: SourceType-Books-1
ObjectType-Conference-2
content type line 11
ObjectType-Book-1
Descrição: Ocean bottom bases (OBBs) have been installed on both sides of the axis of the Sagami Trough east of the Izu Peninsula, central Japan, as the first step toward long-term geodetic and geophysical observations at the plate boundary (subduction zone). The OBB is a platform for seafloor measurements; otherwise it is difficult to find an appropriate place for precise seafloor measurements in the subduction zones. It is made of a nonmagnetic concrete block of size 1100 x 1100 x 500 mm. No change has been recognized in the installation condition in 3 years; the OBB is stable enough to be used for acoustic range measurements on the seafloor as well as for several geophysical measurements.
Data de criação/publicação: 1990
Idioma: Inglês

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