IRIS Knowledge Base

Category » Data

There were 9 articles found in this category:

1. What is MiniSEED?
   This 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: 1. Submit a BREQ_FAST style request to miniseed@iris.washington.edu from your mail client. BREQ_FAST Request manual
2. What is SEED?
   What is SEED? The Standard for the Exchange of Earthquake Data (SEED) is an international standard format for the exchange of digital seismological data. SEED was designed for use by the earthquake research community, primarily for the exchange between institutions of unprocessed earth motion da ...
3. PASSCAL SEG-Y data
   Q: I downloaded some PASSCAL SEG-Y data. What do I do with it? A: For an overview of what programs we have that work with SEG-Y (& other formats): [ http://www.passcal.nmt.edu/content/software-resources ]
4. 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 – ...
5. How do I check what data is available from the DMC?
   The best way to check on data availability is to use our on-line database access tool SeismiQuery. SeismiQuery offers several different query tools to assist the user in acquiring information about data availability as well as metadata about stations, channels and event catalogs. Another set of ...
6. How do I search the data archive?
   Q: I am looking for data on an earthquake that took place in China last year. How do I search the data archive? A: Use SeismiQuery to search the data holdings at the IRIS DMC. SeismiQuery is a set of pre-formatted database queries that allow users to access data and information stored in the DMC ...
7. What are the sources of the data?
   The Data Management Center (DMC) is responsible for archiving data from a number of international and domestic networks, both temporary and permanent. The DMC serves as the primary archive for all data from networks that participate in the International Federation of Digital Seismograph Networks ...
8. What type of data is handled by IRIS?
   The IRIS Data Management System is tasked with archiving seismic data from many sources. Most of the data stored at the Data Management Center in Seattle can be categorized as continuous, passive-source seismic data collected by broadband instruments. The DMC also stores active-source (man-made ...
9. In what format are the data at the DMC stored?
   Almost all data stored at the DMC arrives in the well-structured SEED exchange format. Much of the PASSCAL data is also in SEED format but some are in other formats such as SEG-Y, SAC, or AH. To see which format has been used for a temporary deployment (PASSCAL, SEIS-UK, OBSIP, SISMOB-FR, or oth ...