Solid Earth Sciences(S) | ||
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Session Sub-category | Complex & General | |
Session ID | S-CG67 | |
Title | Ocean area observation to detect crustal activity under the seafloor: Present and future | |
Short Title | Seafloor crustal activity observation | |
Main Convener | Name | Kazuro Hirahara |
Affiliation | Department of Geophysics, Earth and Planetary Sciences, Graduate School of Sciences, Kyoto University | |
Co-Convener 1 | Name | Ryota Hino |
Affiliation | Graduate School of Science, Tohoku University | |
Co-Convener 2 | Name | Takane Hori |
Affiliation | R&D Center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology | |
Session Language | JJ | |
Scope | Recent progress of seafloor observations for earthquake and crustal deformation, such as deployment of submarine cable networks of S-net and DONET, and repeated observations of GNSS/A and acoustic extensometer (direct path acoustic ranging ), enable us to evaluate on-going crustal activities in the megathrust regions along the Japan trench and the Nankai trough. We review the present status and the future plans of such seafloor observations, and discuss the future directions of seafloor observation networks, especially for real-time monitoring of crustal activities. Toward these directions, we welcome papers introducing the present status of novel approaches and systems such as optical fiber, laser ranging or seafloor SAR and real-time geodetic observations using mooring buoys or wave glider, and so on. We also welcome future plans to integrate observation for the crustal activity under the seafloor with observation for ocean and climate changes. | |
Presentation Format | Oral and Poster presentation | |
Invited Authors |
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Time | Presentation No | Title | Presenter | Abstract |
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Oral Presentation May 24 PM1 | ||||
13:45 - 14:00 | SCG67-01 | NIED Observation Network for Earthquake, Tsunami and Volcano: MOWLAS | Shin Aoi | Abstract |
14:00 - 14:15 | SCG67-02 | Recent progress in the GNSS-A seafloor geodetic observation: A review and outlook | Tadashi Ishikawa | Abstract |
14:15 - 14:30 | SCG67-03 | Current status of high-precision onshore observation on the sea: Zenisu reef GPS campaign observation | Takao Tabei | Abstract |
14:30 - 14:45 | SCG67-04 | Interplate coupling and strain partitioning along the Nankai Trough estimated from GNSS and GPS-A data | Takuya NISHIMURA | Abstract |
14:45 - 15:00 | SCG67-05 | Present status and future scope of the GNSS buoy array project for synthetic disaster mitigation | Teruyuki Kato | Abstract |
15:00 - 15:15 | SCG67-06 | Development of observation system for ocean bottom crustal deformation measurement utilizing marine GNSS buoy | Keiichi Tadokoro | Abstract |
Oral Presentation May 24 PM2 | ||||
15:30 - 15:45 | SCG67-07 | Technical developments for continuous seafloor deformation monitoring of seismically coupled plate interface in the Nankai Trough. | Eiichiro Araki | Abstract |
15:45 - 16:00 | SCG67-08 | Compact long-term broadband ocean bottom seismometer for slow earthquakes observation | Masanao Shinohara | Abstract |
16:00 - 16:15 | SCG67-09 | Evaluation of long-term drift characteristic of the OBP based on the laboratory experiment with the high accuracy reference pressure balance and apply it to the actual observation data | Yui Nishimagi | Abstract |
16:15 - 16:30 | SCG67-10 | Real-time use of ocean-floor data for disaster resilience | Narumi Takahashi | Abstract |
16:30 - 16:45 | SCG67-11 | Development of a Tsunami Observation and Prediction System at Hamaoka NPS : Performance Evaluation and Tsunami Prediction on Oceanographic Radar | YOSHIHITO TANAKA | Abstract |
16:45 - 17:00 | SCG67-12 | Discussion on ocean area observation to detect crustal activity under the seafloor: Present and future | Takane Hori | Abstract |
Presentation No | Title | Presenter | Abstract |
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Poster Presentation May 24 Core Time | |||
SCG67-P01 | Practical method to determine relative orientation of horizontal components of ocean bottom seismometer in an array | Shukei Ohyanagi | Abstract |
SCG67-P02 | Array positioning analysis of GPS-Acoustic observation data considering lateral gradient of the sound speed in seawater | Chie Honsho | Abstract |
SCG67-P03 | Spatially non-linear property of sound speed structure in GPS-acoustic measurement | Ryo Matsui | Abstract |
SCG67-P04 | Long-term monitoring of vertical temperature gradient of seawater on the deep seafloor | Syuichi Suzuki | Abstract |
SCG67-P05 | Detection of postseismic slip after the 2011 Tohoku Earthquake by means of direct path acoustic ranging (DPR) | Ryusuke Yamamoto | Abstract |
SCG67-P06 | Development of acoustic signal processing unit for continuous observation of ocean bottom crustal deformation using marine GNSS buoy | Natsuki Kinugasa | Abstract |
SCG67-P07 | Geodesy and broadband seismology from a mobile ocean bottom observation | Hajime Shiobara | Abstract |
SCG67-P08 | Reducing and correcting long-term drift of pressure sensors used for ocean bottom pressure measurements | Hiroaki Kajikawa | Abstract |
SCG67-P09 | Mobile pressure calibrator for ocean bottom pressure gauge of the DONET, Part1: Development of the pressure measurement unit | Yuya Machida | Abstract |
SCG67-P10 | Mobile pressure calibrator for ocean bottom pressure gauge of the DONET Part 2: Development of level adjustment Unit |
Shuhei Nishida | Abstract |
SCG67-P11 | Vibration table test simulating the installation environments of the cabled ocean bottom seismometer deployed to DONET and S-net | Kensuke Suzuki | Abstract |