| Titre | The NEPTUNE Canada Seismograph Network |
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| Auteur | Rogers, G C; Meldrum, R D |
| Source | Seismological Research Letters vol. 79, no. 2, 2008 p. 288 |
| Liens | Online - En ligne
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| Année | 2008 |
| Séries alt. | Secteur des sciences de la Terre, Contribution externe 20070502 |
| Réunion | Annual Meeting of the Seismological Society of America; Santa Fe, New Mexico; US; avril 15-18, 2008 |
| Document | publication en série |
| Lang. | anglais |
| Media | papier; en ligne; numérique |
| Formats | html |
| Province | Région extracotière de l'ouest |
| Sujets | réseau sismique; séismologie; sismographes; géophysique |
| Programme | Réduction des risques dus aux aléas naturels |
| Diffusé | 2008 01 01 |
| Résumé | (disponible en anglais seulement)
NEPTUNE Canada will be the world's first large regional cable-linked, multi-disciplinary scientific seafloor observatory. In the fall of 2007 an 800 kilometer
ring of powered fibre optic cable was laid on the seafloor over the northern part of the Juan de Fuca plate and connected to a shore facility near Port Alberni on Vancouver Island. Five nodes will be attached to the cable in the summer of 2008 paving
the way for junction boxes and scientific instruments to be installed in the fall of 2008 and in 2009. The NEPTUNE Canada Seismograph Network will consist initially of three broadband and four short period seismic systems. The broadband instruments
will form a large triangle with apexes on the Endeavour segment of the Juan de Fuca Ridge, at mid plate, and on the continental slope off Vancouver Island. The four short period instruments will be installed on the Ridge near the broadband system,
together forming a small array 6 km in maximum dimension to record earthquake activity in the vicinity of the many multidisciplinary ridge experiments. The broadband systems will comprise a broadband seismometer and strong motion accelerometer in a
surficially buried spherical titanium case, with a current meter, hydrophone and differential pressure gauge nearby. The short period systems will include 3-component corehole seismometers on long term loan from the Monterey Bay Aquarium Research
Institute (MBARI). All systems will have backup capacity for modest cable outages. The NEPTUNE Canada Seismograph Network relies heavily on knowledge gained from the previous seismographs temporarily deployed in the region by MBARI and the University
of Washington and will re-occupy the broadband and three short period sites at Endeavour. NEPTUNE Canada seismic data is intended to be archived by both the Geological Survey of Canada and IRIS. |
| GEOSCAN ID | 224728 |
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