Seismic Experiment for Investigating the Subsurface (SEIS) InSight Mission to Mars Overview ======== This bundle contains the following collections: data_seed: SEIS observations in Mini-SEED format and associated metadata in Dataless SEED format. SEED is the Standard for Exchange of Earthquake Data maintained by the International Federation of Digital Seismograph Networks (www.fdsn.org). data_table: The same SEIS observations converted to PDS-compliant ASCII text tables (GeoCSV format) and associated metadata in XML files (StationXML format). data_laf: Lander Activity Files, records of daily activities on InSight SEIS such as communications with the lander and changes to instrument gain. data_derived: The Mars Quake Service (MQS) catalog of seismic events. schema_mqs: XML schema used by data products in the data_derived and data_laf collections. This bundle also contains (as a secondary member) the SEIS document collection, document_seis, which includes the following documents. seis_release_notes.txt SEIS Release Notes, updated with each release of data to PDS seis_sis.pdf The SEIS Software Interface Specification (SIS) seedmanual_v2.4.pdf The SEED User's Manual ins-st-grds-1500-ipgp_seed_channelnaming.xlsx The SEIS SEED Channel Naming document in original MS Excel format ins-st-grds-1500-ipgp_seed_channelnaming.pdf The SEIS SEED Channel Naming document in PDF format location_codes_only.xlsx The SEIS Location Codes document in original MS Excel format location_codes_only.pdf The SEIS Location Codes document in PDF format fdsn-station-1.0.xsd The FSDN StationXML base schema fdsn-station-availability-1.0.xsd The StationXML time series data availability schema extension variations-fdsnsxml-seed.txt An overview of major variations between SEED 2.4 and StationXML. The SEIS Software Interface Specification is the primary documentation for the SEIS archive. Each document and data product in this bundle is described by a PDS4 label in a separate file with the same name but with the extension "xml". PDS4 labels are XML (eXtended Markup Language) files that conform to the PDS4 Information Model XML schema at https://pds.nasa.gov/pds4/schema/released/. They are best viewed in an XML-aware text editor, and may be used by software that can manipulate XML documents. The SEIS Data Files =================== SEIS data products are classified as either "continuous" or "event". A continuous data product spans one Earth day, midnight to midnight UTC. An event data product contains data for a single seismic event, as determined by flight software. An event may last as long as several minutes and may cross an Earth day boundary. Continuous and event data are stored in separate branches of the data directory, as shown below. The SEED and ASCII data collections are co-mingled under the data directory. The data directory tree uses the following structure, with the SEED products and their ASCII equivalents in the lowest-level subdirectories. For continuous data products: data / [network] / continuous_waveform / [station] / [year] / [doy] For event data products: data / [network] / event_waveform / [station] / [request-event-id] The Dataless SEED metadata files that correspond to the Mini-SEED data products, along with their ASCII equivalents, are stored in this directory structure: data / [network] / metadata / [station] The file formats of SEIS data products are summarized in Table 1. _______________________________________________________________________________ Table 1. SEIS File Formats File Contents SEED Format PDS-Compliant Format ------------- ------------- -------------------------------------------------- Data Mini-SEED GeoCSV (ASCII text in comma-separated value table) Metadata Dataless SEED StationXML (ASCII text in XML format) _______________________________________________________________________________ The file naming conventions are given in Table 2. Each data file is accompanied by a PDS label with the same name but with the extension ".xml". _______________________________________________________________________________ Table 2. SEIS Data File Naming Continuous data --------------- Directory: data/[network]/continuous_waveform/[station]/[year]/[doy]/ Mini-SEED data file: [network].[station].[location].[channel].[year].[doy].[rev].mseed Mini-SEED data label: [network].[station].[location].[channel].[year].[doy].[rev].xml ASCII CSV data file: [network].[station].[location].[channel].[year].[doy].[rev].a.csv ASCII CSV data label: [network].[station].[location].[channel].[year].[doy].[rev].a.xml Event data ---------- Directory name: data/[network]/event_waveform/[station]/[request-event-id]/ Mini-SEED data file: [network].[station].[location].[channel].[request-event-id].[rev].mseed Mini-SEED data label: [network].[station].[location].[channel].[request-event-id].[rev].xml ASCII CSV data file: [network].[station].[location].[channel].[request-event-id].[rev].a.csv ASCII CSV data label: [network].[station].[location].[channel].[request-event-id].[rev].a.xml Metadata -------- Directory name: data/[network]/metadata/[station]/ Dataless SEED metadata file: dataless.[network].[station].[year].[doy].seed Dataless SEED metadata label: dataless.[network].[station].[year].[doy].xml StationXML metadata file: stationxml.[network].[station].[year].[doy].sxml StationXML metadata label: stationxml.[network].[station].[year].[doy].xml _______________________________________________________________________________ For the above naming conventions, the values for network, station, location, channel, and request-event-id are found in the SEIS SEED Channel Naming document (ins-st-grds-1500-ipgp_seed_channelnaming.pdf) in the document collection. For event data, [year].[doy] is the year and day-of-year of the beginning of the event. Calibration of SEIS raw data results in revisions to the transfer function specified in the metadata file. The raw data files are not changed; rather, revised metadata files are provided as better calibration information becomes available throughout the mission. This bundle was created and archived by the Geosciences Node of the Planetary Data System. Questions about this bundle may be directed to geosci@wunder.wustl.edu. Last updated 2019-05-01.