| Word | Description |
| Dataless SEED | header information in SEED format with the time series omitted. |
| DHI | The Data Handling Interface [DHI] is a CORBA data access framework allowing users to access seismic data and metadata from IRIS DMC and other participating institutions directly from a DHI-supporting client program. |
| DMC | The IRIS Data Management Center archives and distributes data to support the seismological research community. The data center is located near the University of Washington in Seattle. Read More |
| DMS | The IRIS Data Management System [DMS] consists of several components or "nodes" that work together to ensure the smooth flow of GSN and PASSCAL data from the stations to the seismological research community. Read more |
