Bradys Hot Springs Ambient Noise Correlation Functions (Initial Waveforms)

These files are ambient noise correlation (ANC) functions calculated for 11 days of continuous seismic data recorded by the Lawrence Berkeley network in the Brady geothermal field. These are SAC formatted seismic waveforms. The stations included are BPB04, BPB05, BPB07, BPB08, BPRT1, BPRT2, BPRT3, BPRT5, BRB10, BRP01, BRP02, BRP03, BRP04, BPR06, and BRP09

The original data were cut into hour long traces and processed by differentiating, removing the mean, removing the trend, applying a 1% taper, whitening, removing the mean and trend again, and converting to single bit traces.

The data were then correlated with those from other stations and stacked. The resulting files were then named according to the convention:

STA1.STA2.CHAN1_CHAN2.NHOURS.stacked.sac

The days included are from records during 2013 (julian days, 200,220-229).

The ANC correlations were calculated on the raw data traces (without instrument corrections applied) to assess the quality of the signal as a function of frequency throughout the network. The data were recorded at 500 Hz. We observe high quality signals 30 Hz on all traces, and measurable signal up to 80 Hz on a subset of the traces.

Data and Resources

Field Value
DOI 10.15121/1196283
accessLevel public
bureauCode {019:20}
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dataQuality true
datagov_dedupe_retained 20250120143002
identifier https://data.openei.org/submissions/6799
issued 2015-07-01T06:00:00Z
landingPage https://gdr.openei.org/submissions/494
license https://creativecommons.org/licenses/by/4.0/
modified 2018-02-06T17:59:41Z
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programCode {019:006}
projectLead William Vandermeer
projectNumber EE0006760
projectTitle PoroTomo Project
publisher Lawrence Livermore National Laboratory
resource-type Dataset
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Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • ambient-noise-brady-geothermal
  • ambient-noise-correlation
  • anc
  • brady
  • brady-geothermal-field
  • bradys-hot-springs
  • functions
  • geothermal
  • porotomo
  • seismic
  • seismic-waveforms
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer Eric Matzel
maintainer_email matzel1@llnl.gov
metadata_created 2025-09-23T23:22:14.830228
metadata_modified 2025-09-23T23:22:14.830236
notes These files are ambient noise correlation (ANC) functions calculated for 11 days of continuous seismic data recorded by the Lawrence Berkeley network in the Brady geothermal field. These are SAC formatted seismic waveforms. The stations included are BPB04, BPB05, BPB07, BPB08, BPRT1, BPRT2, BPRT3, BPRT5, BRB10, BRP01, BRP02, BRP03, BRP04, BPR06, and BRP09 The original data were cut into hour long traces and processed by differentiating, removing the mean, removing the trend, applying a 1% taper, whitening, removing the mean and trend again, and converting to single bit traces. The data were then correlated with those from other stations and stacked. The resulting files were then named according to the convention: STA1.STA2.CHAN1_CHAN2.NHOURS.stacked.sac The days included are from records during 2013 (julian days, 200,220-229). The ANC correlations were calculated on the raw data traces (without instrument corrections applied) to assess the quality of the signal as a function of frequency throughout the network. The data were recorded at 500 Hz. We observe high quality signals 30 Hz on all traces, and measurable signal up to 80 Hz on a subset of the traces.
num_resources 1
num_tags 19
title Bradys Hot Springs Ambient Noise Correlation Functions (Initial Waveforms)