Event Name: Yountville, California Earthquake
Event Date: 09/03/2000 08:36 UTC (09/03/2000 01:36 am PDT)
Event Identification: 20000903_1
Recorder Type: ETNA, K2, MT WHITNEY

Data Organization and Format ||  Downloads (updated 02/212001) ||  Tables (updated 02/21/2001) || Errata (updated 02/21/2001)

Data Organization and Format

The September 03, 2000, 08:36 UTC Mw 5.0 Yountville, California Earthquake data recorded by the USGS National Strong-Motion Network (NSMN) are available via the NSMP ftp server in the folder (directory) "20000903_1" (https://ca.water.usgs.gov/nsmp/20000903_1).  Data from a variety of  recorders can be downloaded.  The time series provided are available in uncorrected acceleration, corrected acceleration, corrected velocity, corrected displacement, response spectra (relative displacement, relative velocity, pseudo-velocity, and absolute acceleration), and Fourier amplitude spectra of corrected acceleration.  All of the data are in SMC format.

In a departure from previous file-naming conventions (where for a particular channel the different the time series data all had the same filename, and thus required separate directories for each data type), the file names for the Yountville data have the following form:

where 'RRRR' is the four-digit recorder serial number (including leading 0's), 'c' is the channel number of the recorder ('a' corresponds to channel 1, 'b' to channel 2 , etc), the '_x' is used to identify the data type, and the suffix refers to the data format (rs2 and fs1 are valid SMC format types recognized by the BAP processing program.

The data are stored in two directories: uncorrected (only uncorrected acceleration) and corrected (all of the corrected and processed data, including acceleration, velocity, displacement, response spectra and Fourier amplitude spectra. This convention for organizing the data was implemented to avoid confusion between the directory names (Vol1, Vol2, … Vol6) previously used for some earlier events and the standard conventions for Volume1, Volume2 and Volume 3 processing.

Information on how the data are processed can be found in the section on DATA PROCESSING.

Downloads

Files of uncorrected acceleration and corrected acceleration, velocity, and displacement for Episensors sensors that have been corrected for a polarity reversal error discovered in the original data were added on 01/18/2001 (List of polarity-reversal error corrected files). The Fourier amplitude and response spectral data are unaffected by this correction." 

Tables

List of corrected peak ground accelerations and velocities for available time-series data (updated 02/21/2001)  (to obtain list as Excel spreadsheet click here)

Errata

Errata documentation for Yountville data (updated 02/21/2001).

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This page was updated on February 21, 2001.