Successful Deployment of an 21km SMART Cable With Force-Feedback Seismometer and Accelerometers in the Mediterranean Sea
Autonomous Ocean Bottom Seismometer (OBS) deployments pose a large degree of risk due to the inherent lack of data communication during installation resulting in 12+ months before data collection. Cabled solutions provide real-time data during deployment, sometimes with the opportunity to adjust the instrument before it is left to operate remotely. However, cabled solutions are inherently financially and logistically challenging both in terms of seismic hardware and arguably more significantly, deployment hardware (ships, ROVs, cables, etc.). The geographical reach of these experiments is also often limited to within a few hundred kilometers of the coast. These constraints often mean cabled OBS are beyond the scope of most scientific bodies.
Güralp Systems, in collaboration with INGV, has successfully manufactured and demonstrated a method of reducing financial and logistical constraints and extending geographical range by utilizing force-feedback seismic instrumentation in cabled OBS systems. The recent successful deployment of the InSEA Wet Demo SMART (Science Monitoring And Reliable Telecommunications) cable displays a world first in how science can partner with industry to achieve this.
SMART cables are primarily telecommunication cables that secondarily serve as hosts for scientific monitoring equipment. Commercial viability for these systems relies on the cable being laid in a commercially standard manner, thereby minimizing additional deployment costs and reducing barriers to cooperation with cable laying companies. GSL and INGV deployed 3 seismometer-accelerometer pairs housed inline repeaters along the 21km cable length using standard cable-laying techniques to show proof of concept. The system also features a series of high-performance temperature and pressure sensors that can be used for larger-scale oceanographic monitoring.
This pioneering installation using telecommunication cables marks a significant step towards drastically improving local knowledge of inaccessible oceanic regions as well as global azimuthal coverage for teleseismic events, all in real-time.
Session: ESC-SSA Joint Session: Climate Change and Environmental Seismology [Poster Session]
Type: Poster
Room: Exhibit Hall
Date: 5/3/2024
Presentation Time: 08:00 AM (local time)
Presenting Author: James Lindsey
Student Presenter: No
Additional Authors
James Lindsey Presenting Author Corresponding Author jlindsey@guralp.com Guralp Systems Ltd. |
John O'Neill joneill@guralp.com Guralp Systems Ltd. |
Bruce Nicholson bnicholson@guralp.com Guralp Systems Ltd. |
Neil Watkiss nwatkiss@guralp.com Guralp Systems Ltd. |
Giuditta Marinaro giuditta.marinaro@ingv.it Istituto Nazionale di Geofisica e Vulcanologia |
Francesco Simeone francesco.simeone@ingv.it Istituto Nazionale di Geofisica e Vulcanologia (INGV) |
Embriaco Davide davide.embriaco@ingv.it Istituto Nazionale di Geofisica e Vulcanologia |
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Successful Deployment of an 21km SMART Cable With Force-Feedback Seismometer and Accelerometers in the Mediterranean Sea
Category
ESC-SSA Joint Session: Climate Change and Environmental Seismology
Description