About
The SCEDC Archive
Waveform Archival Policies for SCSN Stations
Description
Continuous Archival
| sample rate (sps) | response range | gain | SEED channel | start date of archival |
| 100 | high broadband | high | HH* | 2008/01/01 |
| 80 or 100 | high broadband | accelerometer | HN* or HL* | 2010/01/01 |
| 100 | extremely short period | high | EH* | 2008/01/01 |
| 50 | short period | high | SH* | 2008/01/01 |
| 20 or 40 | broadband | high | BH* | 1999/01/01 |
| 10 | long period | high | LH* | 1999/09/01 |
| 1 | very long period | high | VH* | 1999/09/01 |
Triggered Archival
| sample rate (sps) | response range | gain | SEED channel | start date of archival |
| 80 or 100 | extremely short period | high gain | EH* | 1977/01/01 |
| 80 or 100 | extremely short period | low gain | EL* | 1977/05/01 |
| 80 or 100 | high broad band | high gain | HH* | 1993/05/01 |
| 20 or 40 | high broad band | high gain | BH* | 1990/09/01 |
Significant Event Continuous Recording 2002-2006
In the past certain seismic channels were only archived as triggered
events. However, when a significant event occured, the SCEDC would archive and distribute large, continuous time-windows of high sample-rate data (H__ and E__ channels) for a few hours before and after the event. This procedure became
unnecessary when the SCEDC began continuous archival of all seismic channels.
The general guidelines for significant-event snapshot data collection were:
| 5.0 <= Mx<= 5.5 | 6 hours before the event and 6 hours after |
| 5.5 <= Mx<= 6.0 | 6 hours before the event and 12 hours after |
| 6.0 <= Mx | 12 hours before the event and 24 hours after |
Access
These data are considered part of the continuous archive, rather than the triggered archive. To check on the availability of data for a particular event, use the 'avail' command in STP. For example, for the 2003/02/22,12:19:00 Big Bear event, use:
STP> avail -l -chan HH_ 2003/02/22,06:00:00 +18h
to determine what records are available for 6 hours before the event to 12 hours after.
To retrieve the data, use the 'WIN' command in STP:
STP> win -chan HH_ 2003/02/22,06:00:00 +18h (or any sub-portion of time).
Events Available
We have continuous snapshots available for the following events:
| 0.7 mi S of Obsidian Butte, CA | evid: 14179736 | Mag = 5.1 |
|---|---|---|
| Origin date/time: | 2005/09/02 | 01:27:19 |
| lat/long | 33.1598 | -115.6370 |
| 0.8 mi SSE of Obsidian Butte, CA | evid: 14178184 | Mag = 4.6 |
| Origindate/time: | 2005/08/31 | 22:47:45 |
| lat/long | 33.1648 | -115.6357 |
| channels/time available: | HH_, HL_, EH_ | Continuous archive from 2005/08/31,00:00:00 to 2005/09/06,00:00:00 |
| 5.6 mi ESE of Anza, CA | evid: 14151344 | Mag = 5.2 |
| Origin date/time: | 2005/06/12 | 15:41:46 |
| lat/long | 33.5288 | -116.5727 |
| 2.1 mi NE of Yucaipa, CA | evid: 14155260 | Mag = 4.9 |
| Origin date/time: | 2005/06/16 | 20:53:2 |
| lat/long | 34.058 | -117.0113 |
| channels/time available: | HH_, HL_, EH_ | Continuous archive from 2005/06/12,12:00:00 to 2005/06/18,00:00:00 |
| 13.4 mi W of Wheeler Ridge | evid: 14138080 | Mag = 5.2 |
| Origin date/time: | 2005/04/16 | 19:18:13 |
| lat/long | 35.0272 | -119.1783 |
| channels/time available: | HH_, HL_ | -6h, +12h |
| Fontana Swarm | evid: 14116972 | Mag = 4.4 |
| Origin date/time: | 2005/01/06 | 14:35:28 |
| lat/long | 34.1250 | -117.4387 |
| channels/time available: | HH_, HL_, EH_ | -2.5h, +21.5h |
| stations archived: | All stations within 50km radius of origin | |
| Sumatra-Andaman Island Earthquake | evid: 10069653 | Mw = 9.0 |
| Origin date/time: | 2004/12/26 | 00:58:50 |
| lat/long | 3.307 | 95.947 |
| channels/time available: | HH_, EH_ | -0.5h, +5.5h |
| 2004 Parkfield Earthquake | evid: NC.51147892 | Mag = 6.0 |
| Origin date/time: | 2004/09/28 | 17:15:24 |
| lat/long | 35.815 | -120.374 |
| channels/time available: | HH_, HL_, EH_, EL | -6h, +12h |
| Adobe Hills Swarm (east of Mono Lake) | evid: NC.51146343 | Mag = 5.5 |
| Origin date/time: | 2004/09/18 | 23:02:17 |
| lat/long | 38.009 | -118.679 |
| channels/time available: | HH_, HL_, EH_, EL | -6h, +12h |
| stations archived: | All stations within 500km radius of origin | |
| Offshore: 42 mi SE of San Clemente Island, CA | evid: 14065544 | Mag = 5.3 |
| Origin date/time: | 2004/06/15 | 22:28:48 |
| lat/long | 32.3287 | -117.9175 |
| channels/time available: | HH_, HL_, EH_, EL | -3.5h, +3.5h |
| Wheeler Ridge, CA | evid: 9983429 | Mag = 4.3 |
| Origin date/time: | 2004/02/14 | 12:43:11 |
| lat/long | 35.0378 | -119.1312 |
| channels/time available: | HH_,EH_ | -2h, +22h |
| San Simeon, CA | evid: 9966449 | Mag = 6.5 |
| Origin date/time: | 2003/12/22 | 19:15:56 |
| lat/long | 35.7085 | -121.1043 |
| channels/time available: | HH_,HL_, EH_, EL_ | -6h, +12h |
| Hokkaido, Japan | evid: 13993864 | Mag = 8.3 |
| Origin date/time: | 2003/09/25 | 19:50:08 |
| lat/long | 41.8150 | 143.9100 |
| channels/time available: | EH_, EL_ | -12h, +12h |
| Big Bear | evid: 13935988 | Mag = 5.4 |
| Origin date/time: | 2003/02/22 | 12:19:10 |
| lat/long | 34.3098 | -116.8480 |
| channels available: | HH_,HL_, EH_, EL_ | -6h, +12h |
| Yorba Linda | evid: 9818433 | Mag = 4.8 |
| Origin date/time: | 2002/09/03 | 07:08:51 |
| lat/long | 33.9173 | -117.7758 |
| channels available: | HH_, HL_ | -6h, +24h |
