Replacement of seafloor stations in seafloor geodetic observation
The Hydrographic and Oceanographic Department of Japan has been carrying out GPS/acoustic seafloor geodetic observation for monitoring crustal movements around offshore plate boundary regions. A seafloor reference point consists of three or four battery−driven acoustic transponders called“seafloor station”. To ensure the continuity of observation, it is necessary to replace transponders before their batteries run out and to connect the observation results before and after the replacement by using the position offsets between old and new transponders. In 2009, we replaced transponders at reference points KUMA and KAMN and observed new and old transponders simultaneously three times. This report presents the way of replacement and determines the position offsets between the old and new transponders with enough precision.
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| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
2011
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| Online Access: | http://hdl.handle.net/1834/15666 |
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| Summary: | The Hydrographic and Oceanographic Department of Japan has been carrying out GPS/acoustic seafloor
geodetic observation for monitoring crustal movements around offshore plate boundary regions.
A seafloor reference point consists of three or four battery−driven acoustic transponders called“seafloor
station”. To ensure the continuity of observation, it is necessary to replace transponders before their batteries run out and to connect the observation results before and after the replacement by using the position offsets between old and new transponders. In 2009, we replaced transponders at reference points KUMA and KAMN and observed new and old transponders simultaneously three times. This report presents the way of replacement and determines the position offsets between the old and new transponders with enough precision. |
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