IRIS Knowledge Base

Category » Software

There were 39 articles found in this category:

1. How many simultaneous ws/bulkdataselect requests can I send at one time?
   Q: How many simultaneous ws/bulkdataselect requests can I send at one time? A: Our bulkdataselect web service, which provides bulk request access to miniseed data from the IRIS DMC archives, is continually challenged to provide the fastest service to the widest number of users. In order to cont ...
2. How do I go from miniSEED to SEED?
   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: The easiest way to get full SEED from miniSEED is to first get a dataless SEED volume There are numerous network dataless volumes available onl ...
3. Delayed exports from seedlink
   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 am pretty naive on this subject, but from my Earthworm and Antelope experiences I don't see why data should ever be more than may ...
4. How do I request a copy of the SAC software?
   SAC (Seismic Analysis Code) is a general purpose interactive program designed for the study of sequential signals, especially timeseries data. Emphasis has been placed on analysis tools used by research seismologists in the detailed study of seismic events. License restrictions The Seismic Analy ...
5. Generate a Summary File Using JWEED
   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 output .SAC file with event information. A: A summary file is a text file used by JWEED as an intermediary format to stor ...
6. SAC Questions
   Question: Where is the SAC User Manual? Answer: http://www.iris.edu/software/sac/manual.html Question: I have a question about SAC. Is there a SAC mailing list? Answer: Send questions to sac-help Question: Where are the SAC header values defined? Answer: http: ...
7. SAC-help mailing list
   Q: How does one send a question to the SAC USER Group? A: About sac-help sac-help is a forum for SAC users to exchange ideas and ask questions about SAC usage, installation, portability, etc. Using sac-help To post a message to all the list members, you must first be a subscriber to the mailing ...
8. How do I use rdseed?
   A: Detailed instructions for using rdseed are available in the online rdseed manual. DESCRIPTION rdseed is a general purpose SEED reader, primarily used to convert SEED data to other formats. Output formats include: • SAC (binary and ASCII) • AH • CSS • Mini-SEED • SEED ...
9. SAC file format
   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 either binary or alphanumeric (ASCII). The binary variant can be in either big or little endian byte o ...
10. How do I run JPlotResp?
    Running JPlotResp / Requirements Use of JPlotResp requires that a Java Version Machine (JVM) version 1.4 or higher be available on the host system. An installable version of the Java Runtime Environment (JRE) containing the latest JVM may be downloaded from Sun. If the interactive ins ...
11. How can I find out about IRIS Web Services?
    A: A complete list of services and information can be found at the IRIS Web Services home page: http://www.iris.edu/ws
12. Where do I download software?
    A: IRIS Provides Software online through the web page http://www.iris.edu/software You can navigate from this point to various kinds of software by using the left-hand navigation bar. Most downloadable software also come with online manuals, which can be found at a separate link. IRIS Software ...
13. How do I interpret the SAC ASCII data files?
    Q: I have a few questions regarding the Mexicali Event files that I downloaded: 1. I attached a image showing all the files I received from the Seismogram tab -- I understand "BK.JRSC." refers to the server and the station name, but can you confirm: "BQ2, BQ3, etc." refer to the various channel ...
14. rdseed bad CPU type error (64 bit)
    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 rdseed in compatibility mode (or recompile), but others might be more confused. $ ./rdseed.MAC.x86 -bash: ./rdseed.MAC.x86: Bad CP ...
15. Cannot find origin time in SAC header
    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 requested. There are no other headers indicating the origin time. May you please let me know why this is happening and how d ...
16. What are the port numbers used by DHI at IRIS DMC?
    DHI Server machine port IRIS NameServer dmc.iris.washington.edu 6371 IRIS_NetworkDC dhiserv.iris.washington.edu 6381 IRIS_EventDC dhiserv.iris.washington.edu 6382 IRIS_PondDataCenter dhiserv.iris.washington.edu 1760 ...
17. seed2db problems with new SEED volumes
    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 ? A: As I understand it the latest Antelope still has problems reading the DMC's new SEED volumes with seed2db. The ...
18. Procedure for updating Antelope licenses
    Q: We've recently moved several systems to a new building, and thus a have new subnet. I'm just hoping to find out what the best procedure is for updating the licenses, which, as I understand it are tied to the subnet. We had been at 128.xxx.10.x, but now we're at 128.xxx.92.x. Should I simp ...
19. Including IRIS-provided data in sample code
    Q: I'm using a single three-channel seismic recording of one earthquake to include in a MATLAB code distribution. I just want to know if it's OK to include the sample dataset in my MATLAB package. A: In general, the data at IRIS DMC is considered open for your use. Please be sure to cite tha ...
20. ms2sac error for miniseed records
    Q: I concatenated a bunch of miniseed records together and then ran “ms2sac” to convert them as SAC file. I got “Max slew exceeded - time series prematurely terminated”, the miniSEED is about 30M, and the SAC file becomes 17K. A: I'm guessing ms2sac probably cannot ha ...