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Discovery and analysis of time delay sources in the USGS personal computer data collection platform (PCDCP) system

Scientific Investigations Report 2014-5045
By: , , and 
https://doi.org/10.3133/sir20145045

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Abstract

Intermagnet is an international oversight group which exists to establish a global network for geomagnetic observatories. This group establishes data standards and standard operating procedures for members and prospective members. Intermagnet has proposed a new One-Second Data Standard, for that emerging geomagnetic product. The standard specifies that all data collected must have a time stamp accuracy of ±10 milliseconds of the top-of-the-second Coordinated Universal Time. Therefore, the U.S. Geological Survey Geomagnetism Program has designed and executed several tests on its current data collection system, the Personal Computer Data Collection Platform. Tests are designed to measure the time shifts introduced by individual components within the data collection system, as well as to measure the time shift introduced by the entire Personal Computer Data Collection Platform. Additional testing designed for Intermagnet will be used to validate further such measurements. Current results of the measurements showed a 5.0–19.9 millisecond lag for the vertical channel (Z) of the Personal Computer Data Collection Platform and a 13.0–25.8 millisecond lag for horizontal channels (H and D) of the collection system. These measurements represent a dynamically changing delay introduced within the U.S. Geological Survey Personal Computer Data Collection Platform.

Suggested Citation

White, T.C., Sauter, E.A., Stewart, D., 2014, Discovery and analysis of time delay sources in the USGS personal computer data collection platform (PCDCP) system: U.S. Geological Survey Scientific Investigations Report 2014-5045, vi, 24 p., https://doi.org/10.3133/sir20145045.

ISSN: 2328-0328 (online)

Publication type Report
Publication Subtype USGS Numbered Series
Title Discovery and analysis of time delay sources in the USGS personal computer data collection platform (PCDCP) system
Series title Scientific Investigations Report
Series number 2014-5045
DOI 10.3133/sir20145045
Year Published 2014
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Geologic Hazards Science Center
Description vi, 24 p.
Online Only (Y/N) Y
Additional publication details