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It is essential to observe seismic activities on the sea floor just above the seismogenic zones where large earthquakes have been occurred. We have developed UT-OBCS, a new ocean bottom cabled seismometer for a high density seismic array network, with utilizing ICT (Information and Communication Technologies), i.e., IP (Internet Protocol) on the seafloor. UT-OBCS is a compact and low cost system....
To install seismometers and tsunami-meters on the sea floor is necessary for monitoring seismic activities of a seismogenic zone. An ocean bottom cable seismometers system (OBCS) is most suitable for this purpose since data can be obtained in real-time. Some systems have been installed over the past 25 years around Japan. Although the existing OBCS systems are useful for the study of seismic activities,...
An ocean bottom cable seismometers system (OBCS) is the best instrument to observe seismic activities on the sea floor because data is obtained in real-time. Therefore some systems have been installed over the past 25 years around Japan. Although the existing OBCS systems are useful for the study of seismic activities, the number of station is limited due to their costs. In order to lower the cost...
An ocean bottom cabled seismometer (OBCS) is the best solution for the monitoring of earthquake activity in a seismogenic zone where big or huge earthquakes have occurred repeatedly. However, the number of existing OBCS has been insufficient for high resolution observation of the seismogenic zone, due to the high costs involved. In order to lower the cost of OBCS and to meet requirements for flexibility...
An ocean bottom cable system (OBCS) is the best solution for monitoring the tectonic activities in a seismogenic zone. However the number of seismometers of the existing OBCS is insufficient for high resolution observation of the seismogenic zone, because the cost of the OBCS has been very expensive. In order to solve this problem, the authors have studied new cost effective OBCSs with 40 seismic...
An ocean bottom cable system (OBCS) is the best solution for monitor the tectonic activities in a seismogenic zone. However the number of seismometers of the existing OBCS is insufficient for high resolution observation of the seismogenic zone, because the cost has been very expensive. In order to lower the cost of OBCS, authors have studied cost analysis of existing OBCS in depth jointly with engineers...
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