Are there any other sensors besides seismometers at USArray TA stations? [Article]
Yes, beginning in 2009 an Environmental Processor became part of the standard station design and records barometric pressure in addition to temperature inside the vault. These channels a
- Where can I get the instrument responses for USArray TA stations? [Article]
Response files can be obtained from IRIS by several different methods. A few of the more common ones include: 1. as part of a SEED file. SEED files can be obtained through any of the
- How accurate are the station latitudes and longitudes? [Article]
USArray TA station coordinates are measured by handheld GPS and reported to five decimal places of precision. IRIS DMC internally can store up to six decimal places of precision for latitude
- I requested some USArray TA data and received multiple copies of the same data. ... [Article]
The IRIS DMC normally receives two copies of Transportable Array data, the real-time telemetred copy and a later "final" copy. In some cases a third copy of data is recieved that fills i
- Is there a limit on the number of lines I can have in a BREQ_FAST request? Limi... [Article]
Q: Is there a limit on the number of lines I can have in a BREQ_FAST request? Limit on the size of data? A: There are a number of variables that will contribute to answerin
- Accessing IRIS Data with BREQ_FAST [Article]
BREQ_FAST - Batch REQuests, FAST IRIS provides a few ways to access data using a BREQ_FAST Request: 1)
- How do I go from miniSEED to SEED? [Article]
Q: I received some raw data in miniSEED format. How do I go from miniSEED to SEED? I have the station's location, elevation, and poles & zeros. A: &nb
- Delayed exports from seedlink [Article]
Q: At the moment, a station I am observing with seedlink will have delays of just a couple of minutes, but this afternoon I was seeing delays closer to 10 minutes. I a
- What are Channel Codes? [Article]
Channel Codes: The Channel Code is a 3-character code that specifies the type, bandwidth of the recorded signal, and orientation of the sensor. For instanc
- What is SEED? [Article]
What is SEED? The Standard for the Exchange of Earthquake Data (SEED) is an international standard format for the exchange of digital seismological data. SE
- Generate a Summary File Using JWEED [Article]
Q: After receiving the SEED file that I requested, how can I add the summary file when using rdseed to extract the data? I want to add the summary file because I want the outpu
- How do I use rdseed? [Article]
A: Detailed instructions for using rdseed are available in the online rdseed manual.
- What is MiniSEED? [Article]
This is a stripped down version of SEED data which only contains waveform data. There are no detailed metadata on the station instrumentation present, whic
- SAC file format [Article]
A SAC formatted data file generally contains a single, contiguous segment of time-series data structured as a header section followed by floating point data values. The SAC file format can be eit
- rdseed bad CPU type error (64 bit) [Article]
Q: The "mac x86" precompiled version of rdseed is not x86, it is x86_64. So older 32 bit intel macs, like mine can't run it. I can easily get by running the powerpc rdse
- Cannot find origin time in SAC header [Article]
Q: I requested some sac files using Wilber II. I noticed that the time following the "KZTIME" header in the sac file is different from the origin time of the event that I request
- seed2db problems with new SEED volumes [Article]
Q: The Seed2db program seems to have broke as of last week on new DMC issued SEED volumes. Do you know if the new Antelope 5.0 64 bit version will fix the broken Seed2db program ?
- Downloading data from the IRIS DMC using FTP or HTTP robustly [Article]
It is common to download data using either FTP or HTTP from the IRIS DMC. Most of these downloads are completed quickly and without interruption. On occasion, a user's connection to the DMC
- What are the fields in a RESP file? [Article]
... were posted by Sheila Peacock to the sac-help mailing list, which follow. Meaning of numbers in rdseed RESP files Here is a sample rds
- I requested some data and got a file back that I can't read. What do I do w... [Article]
Q: I requested some data and got a file back that I can't read. What do I do with this file? A: It is first necessary to identify what kind of file this is. Look
