The IRIS DMC maintains a vast database of station siting, instrumentation, and earthquake information
which serve to enhance and support our waveform data archives. The descriptions below highlight how you can query on our metadata holdings as well as request SEED metadata.
Query the IRIS database
SeismiQuery is a set of pre-formatted database queries that allow
users to access data and information stored in the DMC Oracle database.
Go to SeismiQuery »
The MetaData Aggregator (MDA) returns metadata summaries from the
IRIS DMC database including data availability and links to further
Five levels of summary are available: network list, network, station,
location and channel
Go to MDA »
What is a dataless SEED volume?
A dataless SEED volume contains the metadata for a request only, including
instrument responses, instrument coordinates, compression type, etc.. This
dataless volume can be used in combination with a miniSEED volume (as extracted
from the BUD filesystem) with rdseed.
A dataless, by definition, contains no "data", in the sense that
no waveform data are included, only headers.
Getting a Dataless SEED File:
1. Generate a request for a dataless using the online
(select dataless SEED under Data Type)
2. Submit a BREQ_FAST style request to firstname.lastname@example.org from your
3. Get a dataless from the BUD
network dataless SEED files from the IRIS