IP Address Change

May 26th, 2005

May 26th, 2005

The NCEDC will begin moving its computers to a new, more seismically secure building and computer room facility. This will require a new IP address for the NCEDC web and ftp server. The new address, starting at 2005/05/26,12:00 PDT will be:

169.229.197.11 www.ncedc.org

If your computer uses the Domain Name System (DNS) to look up the IP address of a hostname, you do not need to make any changes. Your computer will automatically find the new address once the address change has been made.

However, if your computer uses static host tables (/etc/hosts on most Unix systems), you will need to update the address in the hosts file at that time.

If you have any problems connecting to the NCEDC computer after Thursday, May 26 2005, please contact Doug Neuhauser at doug@seismo.berkeley.edu.

The NCEDC web and ftp server will be unavailable for ~ 2 hours during this move. We regret any inconvenience that this causes.

The NCEDC is a joint project of the University of California, Berkeley and the USGS. Please send us email at ncedcinfo@ncedc.org or fill out our comments form if you have questions or comments about these changes.

SAFOD Pilot Hole data available at the NCEDC

January 15th, 2005

January 15th, 2005

The NCEDC is pleased to announce the availability of seismic waveform data from the San Andreas Fault Observatory at Depth (SAFOD) Pilot Hole in Parkfield. SAFOD is one component of the EarthScope Major Research Initiative funded by the National Science Foundations (NSF).

The SAFOD pilot hole is a separate, 2.2-km-deep scientific drilling experiment at the same surface location as SAFOD. This site is ~ 1.8 km SW of the San Andreas fault near Parkfield, CA, on a segment of the fault that moves through a combination of aseismic creep and repeating microearthquakes. It lies just north of the rupture zone of the 1966, magnitude 6 Parkfield earthquake, the most recent in a series of events that have ruptured the fault five times since 1857. The Parkfield region is the most comprehensively instrumented section of a fault anywhere in the world, and has been the focus of intensive study for the past two decades as part of the Parkfield Earthquake Experiment. The pilot hole is a collaborative effort between the International Continental Drilling Program (ICDP), NSF and the U.S. Geological Survey (USGS).

The first available SAFOD Pilot Hole data consists of ~ 5600 triggered events from 2002/09/13 through 2004/05/30. The data were recorded on 96 data channels (32 3-component sensors) at various depths at sample rates of either 250 Hz, 500 Hz, 1000 Hz, or 2000 Hz. Continuously recorded data surrounding the magnitude 6.0 Parkfield earthquake on 2004/09/28 will be available shortly.

For more information on SAFOD data available through the NCEDC, see the NCEDC SAFOD web page.

The NCEDC is a joint project of the University of California, Berkeley and the USGS. Please send us email at ncedcinfo@ncedc.org or fill out our comments form if you have questions or comments about these changes.

STP service available at the NCEDC

December 4th, 2004

December 4th, 2004

The NCEDC is pleased to announce the availability of STP (Seismic Transfer Program) service, originally developed by the Southern California Earthquake Data Center (SCEDC). STP is a client-server system that provides timeseries data in various data formats such as SAC, MiniSEED, and V0 (engineering) format. In the future, the NCEDC STP server will also provide earthquake catalog information and related phase data.

An STP client can request timeseries by either channel name(s) and time interval or by eventid. When timeseries are requested by eventid, only those waveforms directly associated with the eventid by the NCEDC will be provided.

A command-line STP client program, tested under Solaris (Unix) and Linux, can be downloaded from the directory

http://www.ncedc.org/ftp/pub/programs/stp/

Users should be be aware that the STP server performs some transformations on the raw timeseries. The STP server converts the raw timeseries into a uniformly sampled timeseries when delivering the timeseries to the STP client. If the STP server detects missing data or a time gap in the timeseries, it will supply a user-specified "missing value" to fill the gap in the timeseries. If the timeseries contains a negative timejump in the timeseries, the STP server may discard samples to create a uniformly sampled timeseries. STP may be best used to download event timeseries or relatively short segments from continuous timeseries.

A Web-based STP interface will be added in the future.

The NCEDC is a joint project of the University of California, Berkeley and the USGS. Please send us email at ncedcinfo@ncedc.org or fill out our comments form if you have questions or comments about these changes.

FISSURES framework implemented at the NCEDC

November 11th, 2004

November 11, 2004

We are pleased to announce that the BSL has implemented the FISSURES/DHI framework at the NCEDC. FISSURES is an IRIS project, led by the University of South Carolina.

Several FISSURES/DHI services have been implemented at the NCEDC and are available now:

Seismogram Service: (Waveform Information)

  • NCEDC_DataCenter
    • Continuous waveforms for BK,BP,CI,NC,NN,UL networks
    • Coming soon! Event waveforms for NCSN network (BK,CI,LA,NC,NN,NP,WR network codes)

Event Services: (Parametric Information)

  • BDSN_EventDC
    • BDSN catalogs from January 1984 to Present.
    • Coming soon! Historic BDSN catalogs from 1910 to 1984
  • NCSN_EventDC
    • NCSN catalogs from July 1966 to December 2002.
    • Coming soon! Current NCSN catalogs from 2003 to Present.

Network Service: (Instrument Responses)

  • NCEDC_NetworkDC
    • Instrument responses for networks AZ,BK,BP,CI,LB,NC,NN,NP,UL,US.
    • Coming soon! Instrument responses for WR network and completion of NN network

The NCEDC implementation supports the following FISSURES clients:

  • FISSURES

and in various IRIS newsletters:

  • Data Handling Infrastructure at the DMS
  • DMS Node Focus: University of South Carolina
  • Data Handling Interface for FISSURES
  • JEvalResp and JPlotResp versions 1.0 Released
  • FISSURES-Matlab interface

The NCEDC is a joint project of the University of California, Berkeley and the USGS. Please send us email at ncedcinfo@ncedc.org or fill out our comments form if you have questions or comments about these changes.

EVT_FAST now supports SEED format

November 11th, 2004

November 11, 2004

The NCEDC is very pleased to announce the availability of SEED and mini-SEED format output from the EVT_FAST data request tool. EVT_FAST is an email and Web-based tool for requesting event data recorded primarily by the Northern California Seismic Network.

The EVT_FAST email interface has been updated to support SEED and miniSEED output in addition to the original SAC binary, SAC ascii, and AH data formats. In addition, you may requests only selected data channels from these events on the basis of the SEED Station, Network, Channel, and Location codes. The EVT_FAST Web-based interface has also been updated to handle these enhancements.

The NCEDC is a joint project of the University of California, Berkeley and the USGS. Please send us email at ncedcinfo@ncedc.org or fill out our comments form if you have questions or comments about these changes.


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