Concise outline;
Existing permanent seismic stations allows resolution of the structure beneath Arctic area is sufficient to detect fundamental differences in the lithosphere beneath continental and oceanic area, however, not to clearly define the structure within each terrains. In addition, seismicity around the Arctic area is limited by the sparse station distribution and the detection level for earthquakes remains inadequake for full evaluation of tectonic activity. The proposed program of the Seismic Deployments in Russian Arctic Region aims to improve seismic instrumentation on and around the high latitude Arcic area.
Existing stations of the Federation of Digital Seismographic
Network (FDSN) should be supplemented by instrument specification
with Global Seismological Network (GSN) in high latitude of the
Arctic area. Technological advances in power supplies and real-time
data transmission for remote stations, as well as significant
logistical support, are fully required. Our plan is to make an
outreach to establish a permanent station in the Russian Arctic area
in order to offer the obtained data to FDSN for the use of Global
Seismology.
Significant advances and targets;
Justification to develop the Arctic permanent seismic stations address both the unique aspects of seismology on Arctic and general issues that would be common to global Earth sciences; for example:
- lithospheric dynamics in an ice-covered environment;
- how lithospheric processes drive and may be driven by global environmental change (sea level, climate);
- the scale and nature of rifting as a process that has shaped the continent and dominated its evolution;
- the role of Antarctica as the keystone in the supercontinent formation and break-up throughout Earth's history;
- how the tectonic and thermal structure of the Antarctic lithosphere affect current ice sheet dynamics;
- age, growth, and evolution of the continent and processes that have shaped the lithosphere;
- the effect of improved seismic coverage on global models of the lithosphere, mantle, and core.
Permanent broadband seismic stations in Arctic region provide unique opportunity for the contribution to the global Earth science, not only for Russian local/regional studies. The obtained data will eventually sent to the global data centre of the Federation Digital Seismographic Networks.
The International Polar Year (2007-2008) may be a good chance to initiate this Arctic Seismic Deployment in order to achieve these targets.
Data management;
The obtained dataset from the proposed prmanent stations can be initially stored and published for all the related cooperatives and the other geo-scientists by Internet service from the data library server of the National Institute of Polar Research (POLARIS system). Then immediately offered to the world data centres of seismology, such as IRIS/DMS, FDSN/GSN, PACIFIC21 centres. These web-pages can be opened in general and combined to the JCADM, SCAR/ANTEC, etc.
