Mission results from the first GEOSTAR observatory (Adriatic Sea, 1998)
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- Beranzoli Laura
- Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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- Braun Thomas
- Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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- Calcara Massimo
- Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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- Casale Paolo
- Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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- Santis Angelo De
- Istituto Nazionale di Geofisica e Vulcanologia (INGV) Università “G. D'Annunzio”
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- D'Anna Giuseppe
- Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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- Mauro Domenico Di
- Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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- Etiope Giuseppe
- Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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- Favali Paolo
- Istituto Nazionale di Geofisica e Vulcanologia (INGV) Università “G. D'Annunzio”
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- Fuda Jean-Luc
- Laboratoire d'Océanographie et de Biogeochemie-CNRS
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- Frugoni Francesco
- Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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- Gamberi Fabiano
- Istituto per la Geologia Marina-CNR
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- Marani Michael
- Istituto per la Geologia Marina-CNR
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- Millot Claude
- Laboratoire d'Océanographie et de Biogeochemie-CNRS
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- Montuori Caterina
- Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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- Smriglio Giuseppe
- Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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Description
We assess the first mission of the GEOSTAR (GEophysical and Oceanographic STation for Abyssal Research) deep-sea multidisciplinary observatory for its technical capacity, performance and quality of recorded data. The functioning of the system was verified by analyzing oceanographic, seismological and geomagnetic measurements. Despite the mission's short duration (21 days), its data demonstrated the observatory's technological reliability and scientific value. After analyzing the oceanographic data, we found two different regimes of seawater circulation and a sharp and deepening pycnocline, linked to a down-welling phenomenon. The reliability of the magnetic and seismological measurements was evaluated by comparison with those made using on-land sensors. Such comparison of magnetic signals recorded by permanent land geomagnetic stations and GEOSTAR during a “quiet”day and one with a magnetic storm confirmed the correct functioning of the sensor and allowed us to estimate the seafloor observatory's orientation. The magnitudes of regional seismic events recorded by our GEOSTAR seismometer agreed with those computed from land stations. GEOSTAR has thus proven itself reliable for integrating other deep-sea observation systems, such as modular observatories, arrays, and instrumented submarine cables.
Journal
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- Earth, Planets and Space
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Earth, Planets and Space 55 (7), 361-373, 2003
Society of Geomagnetism and Earth, Planetary and Space Sciences, The Seismological Society of Japan, The Volcanological Society of Japan , The Geodetic Society of Japan , The Japanese Society for Planetary Sciences
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Details 詳細情報について
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- CRID
- 1390282681490535296
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- NII Article ID
- 10011769144
- 130003956339
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- NII Book ID
- AA11211921
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- ISSN
- 18805981
- 13438832
- http://id.crossref.org/issn/13438832
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- NDL BIB ID
- 6686678
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed