Frequently Answered Questions

• Are there infrasound sensors at Transportable Array stations? infrasound
• Does IRIS perform quality assurance on the data it receives? Quality Assurance
• Does IRIS support any simple ASCII data formats that contain timeseries data? ASCII format Data Formats
• Does the DMC have a collection of 3-d earth models and software to plot them?
• How accurate are the USArray Transportable Array instrument orientations? Quality Assurance
• How can I create my own dataless SEED?
• How can I find out about IRIS Web Services?
• How can I post a job announcement or find job listings? Message Center
• How can I run SAC in Windows? SAC
• How do I ask a question to the IRIS DMC? Message Center
• How do I cite data provided by IRIS? data
• How do I decrypt restricted data? restricted data data
• How do I find the coordinates for stations? Station Web Service MetaData Aggregator
• How do I find the origin time in SAC header? SAC
• How do I get a list of stations in a text file? SeismiQuery Station Web Service
• How do I get data out of a miniSEED volume? rdseed miniSEED Jrdseed
• How do I go from miniSEED to SEED? rdseed SEED miniSEED Data Formats
• How do I interpret magnitudes and magnitude types? Special Events Earthquakes
• How do I request an FDSN Network Code? SEED FDSN
• How do I request restricted data? restricted data data
• How do I search for data on a particular earthquake? SeismiQuery Timeseries Web Service Earthquake Browser Wilber data
• How do I use rdseed? rdseed
• How long after an earthquake do I have to wait for data to arrive?
• How many simultaneous ws/bulkdataselect requests can I send at one time? Dataselect Web Service
• In what format are the data at the DMC stored? DMC data
• I requested some data and got a file back that I can't read. What do I do with this file? data
• I see curious transient signals in the data from USArray Transportable Array stations. What are they?
• Is the number of earthquakes increasing?
• Is there a limit on the number of lines I can have in a BREQ_FAST request? Limit on the size of data? BREQ_FAST
• Is there a way to request data from Wilber without an event? Wilber
• Received a "no data" message when requesting data data Web Service
• Request data by station location Station Web Service MetaData Aggregator
• SAC file format SAC Data Formats
• Seismic event sources: earthquakes vs. fracking Earthquakes
• Someone told me the USArray TA data has gaps. Is that true? Quality Assurance
• Stations recording data during a specific event SeismiQuery Wilber Earthquakes Event Web Service
• Website login help Website
• What are Data Products? Data Products SPUD
• What are SEED Channel Codes? SEED
• What are the fields in a RESP file? rdseed Jrdseed RESP instrument response
• What are the standard USArray TA station channels? Transportable Array
• What channels are available and what channels should I request? Data Channel Codes
• What does the M, D, R, or Q character mean in my data file name? miniSEED data Quality Assurance
• What is a "count" in timeseries data? Earth Units Timeseries Web Service instrument response Data Formats
• What is a RESP file? RESP instrument response
• What is a SEED location identifier (or location code)? SEED
• What is miniSEED? miniSEED Data Formats
• What is PASSCAL SEG-Y data? SEG-Y Data Formats
• What is Restricted Data? restricted data
• What is the difference between miniSEED, dataless SEED and SEED? SEED Dataless SEED miniSEED Data Formats
• What tools can I use to request waveforms? BREQ_FAST BUD Web Service
• Where can I find information on recent earthquakes? Earthquakes
• Where can I get strong motion data for engineering purposes? Data Services
• Where does Wilber get arrival times? Travel Time Wilber
• Where do I find software manuals? manual
• Why does the data I downloaded from a USArray TA station look crazy? Quality Assurance
• Why does this phase response wrap so strongly within the passband? evalresp instrument response
• Why does Wilber report "No data found"? Wilber
• Why is a recent earthquake not showing on Seismic Monitor? Seismic Monitor