Data Services Products: TA-Met-Subarray Reference data set for the TA Meteorological Subarray

Summary

UNRELEASED PRODUCT — IN DEVELOPMENT

Status: In development
Last update: 2016-02-22

This data set will be a compilation of the wind (speed and direction) and temperature profiles as well as infrasound sensor’s ambient noise estimates of a selected subarray of the USArray Transportable Array (TA) stations. This subarray includes TA station that were equipped with meteorological sensors during their deployment.

Description

As of February 2016, TA has deployed total of 32 stations equipped with meteorological sensors: wind speed (channel = LWS), wind direction (LWD) and outside temperature (LKO). Although these stations are deployed in various regions (the southeast US, Canada, New Mexico), 25 are spaced approximately 90 km apart and therefore could be considered a meteorological subarray (Figure below). The data gathered by these 25 stations provide an opportunity to analyze the relation between wind and temperature variations and changes in barometric pressure noise, as recorded by the infrasound sensors (channel = BDF).

Map showing the 25 neighboring USArray TA stations (blue dots) that form the meteorological subarray.



Table showing operating time of the USArray TA meteorological subarray stations.


For the TA infrasound sensors, wind and microbaroms, infrasonic waves generated in marine storms, are often the dominant sources of noise that may mask infrasound signals or result in false positives in automated detection systems such as TAID. This data product aims to compile a reference data set based on the data collected by these 25 stations, to highlight potential interdependencies between these quantities. The links below show plots of variations in wind speed, wind direction,temperature and barometric pressure for 2013 and 2014 (see table above), using a common methodology.



Normalized monthly histograms of wind speed, 2013-2014 (click to show/hide)

Monthly wind direction histograms, 2013-2014 (click to show/hide)


Seasonal wind speed/direction statistics, 2013-2014 (click to show/hide)


Monthly HVSR, 2013-2014 (click to show/hide)


Normalized monthly histograms of the outside temperature, 2013-2014 (click to show/hide)

Hourly Power spectral densities 2013-2014 (click to show/hide)

Ambient infrasound noise (0.1 – 0.3 Hz) vs wind speed 2013-2014 (click to show/hide)

Monthly mean and standard deviation of wind speed vs median, 5 and 95 percentile PSDs , 2013-2014 (click to show/hide)

Monthly mean and standard deviation of the outside temperature (red) and median PSD and 5 and 95 percentiles (green), 2013-2014 (click to show/hide)

All-time Power spectral density 2013-2014 (click to show/hide)



—product/ta-met-subarray/image/T56A_LWS-BDF_2014-07.png!
product/ta-met-subarray/image/T56A_LWS-BDF_2014-12.png!
product/ta-met-subarray/image/T56A_LKO_LWS-BDF_2014-07.png!
product/ta-met-subarray/image/T56A_PDF_2014_07-12.png!

Citations and DOIs

PLEASE DO NOT QUOTE OR CITE THIS PAGE. THIS IS A WORK IN PROGRESS.

Credits

DMC Data Products Team

Categories

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