IRIS Knowledge Base

Category » Requests

There were 21 articles found in this category:

1. How to get a dataless SEED for stations and channels in a region
   Q. How can I get a dataless SEED for all stations and channels within a geographic bounding box? A. The SeismiQuery page at http://www.iris.edu/SeismiQuery/breq_fast.htm can do this. For the specified virtual networks, network id, station, location, channel and time constraints this form will ...
2. NetDC request
   NetDC- is a data request system that allows a user to request seismological information from multiple data centers through a single email mechanism. Information is delivered to the user through email and/or FTP in a uniform binary or text format. NetDC Request Form NetDC User Manual Which emai ...
3. What is Restricted Data?
   Q: What is Restricted Data? A: An important function of the DMC is to collect data, sort it, and make it readily available to a wider research community, especially with short-term temporary experiments (such as from PASSCAL, SEIS-UK, OBSIP, SISMOB-FR, and others) that have multiple partners con ...
4. How to request data in SAC format
   User Question: I was wondering how I can request data in SAC format? In the BREQ_fast request description there is no option for SAC. Answer: Using BREQ_fast request and rdseed If you are requesting your SEED via a BREQ_fast request, you would first download your SEED file from the ftp site and ...
5. What is the difference between assembled and customized data?
   Assembled Data Some data comes to the DMC in a format other than SEED, such as SEG-Y or SAC. These data are considered "assembled" because they are unique to a project or experiment and are not archived in the same way that the SEED data is archived. Users request this data via e-mail to assembl ...
6. How do I get station response information?
   Station response information is part of the SEED data format. You can extract responses from a SEED volume using rdseed OR you can view response information directly from our database using SeismiQuery. The Channel Response Tool A new web mechanism to query response information via the http prot ...
7. How do I get data from stations near an event?
   Q: I only want data from stations that are a certain distance from an event. How do I do that? A: Use JWEED software to select stations within a defined area. JWEED is a Java tool that allows you to set very specific parameters for requesting event-related data. You can interactively explore ...
8. Lunar seismic data request
   User Question: I would like to download Lunar seismic data, but it doesn't appear on custom queries. Is there something special I have to do to request the data? Answer: The Apollo Lunar seismic data is only available as an assembled data product. To obtain the Apollo data, please refer to our ...
9. How can I request miniSEED data?
   What is MiniSEED data? MiniSEED data is a stripped down version of SEED data which only contains waveform data. There is no station and channel metadata included. Getting a MiniSEED File: Submit a BREQ_FAST style request to miniseed@iris.washington.edu from your mail client. for formatting, see ...
10. Waveform Request Tools
    Request Waveform Data Using BREQ_FAST Batch access to the IRIS DMC archive can be obtained by electronically mailing a specially formatted file to the IRIS DMC in Seattle. These are BREQ_FAST files and provide a base level access to the DMC needed by any user. Learn how to submit a BREQ_FAST R ...
11. How do I get a list of stations?
    Q: I am wondering how I can get a list of all station names from all the networks with their latitude, longitude, elevation, etc, in a text file? A: Use IRIS SeismiQuery - Stations Inventories Query http://www.iris.edu/SeismiQuery/station.htm Click the checkboxes to select the items that yo ...
12. What is the simplest DMC Request Tool to use
    Q. I just want to make a simple request for data from a few stations for one time period. What is the best DMC Request Tool to use? A. WebRequest is a simple was to make a request for data when you know the network and station codes of interest.
13. Request data by station location
    Q. How can I find out what stations IRIS has data for that fall within a latitude/longitude bounding box? A. A user can find seismic data by station using a latitude/longitude bounding box in VASE or JWEED. MDA will also provide information on data available by station location. VASE In the Map/ ...
14. How to I find the coordinates for stations?
    Q: I have made a request about the data of South Sumatra earthquake on 25th July 2004, where the data consists a part of XE stations. I have looked up this Network code in fdsn.org, but I can't find it. Would you send me the coordinates of stations in XE NETWORK? A: The easiest way for you to ...
15. Received a "no data" message when requesting data
    Q: I received a "no data" message when requesting data from the DMC but I checked the database and I know that the station was running at the time for which I requested data. What went wrong? A: Our database records may indicate that the station is active at a given time, but occasionally data ...
16. What is a location identifier (or location code)?
    The use of location codes enables the distinction between multiple same-name channels from different, co-located sensors at one site. There is an article in an older DMC Electronic Newsletter that explains the use of location identifiers: [ http://www.iris.edu/news/newsletter/vol1no1/page1.htm]
17. What does the M, D, R, or Q character mean in my data file name?
    This is a quality control marker. M = Merged data, a new post-processing scheme being implemented at IRIS DMC to present clean data traces from multiple pieces of data. Q = Data tagged as Quality Controlled by the network operator D = Data of indeterminate quality – ...
18. Is a network code required when making a BREQ_FAST request?
    No. You may use a wildcard instead of a specific network code. This can be either an asterisk (*) for all characters or a question mark (?) to wildcard a single character. Please consult the BREQ_FAST manual for further details. Be advised that there are over 90 networks that contribute data ...
19. How do I know which request tool to use?
    A: The DMC offers many different tools for making requests because our user community is so diverse. As a result, we’ve made an attempt to encapsulate the user’s options diagrammatically, something we like to call the ‘mousepad’ precisely because mousepads have been pri ...
20. How do I request restricted data?
    First, you must contact one of the experiment's principal investigators (PIs) and get a password. You can find the names of participating PIs by viewing the meta data for assembled data or temporary networks using SeismiQuery. After the PI has given you the password for the data, fill out the da ...