Field Installation and Real-Time Data Processing of the New Integrated SeismoGeodetic System with Real-Time Acceleration and Displacement Measurements for Earthquake Characterization Based on High-Rate Seismic and GPS Data
Leonid G Zimakov1, Michael Jackson
2, Jared Raczka
3, Paul Passmore
1 and Sergio Eduardo Barrientos
4, (1)Trimble Navigation Ltd., Infrastructure, Plano, TX, United States, (2)Trimble Navigation Ltd, Infrastructure Division, Westminster, CO, United States, (3)Trimble Navigation Ltd., Advanced Positioning Division, Plano, TX, United States, (4)Universidad de Chile, Centro Simológical Nacional, Santiago, Chile
Contact First Author: Leonid G Zimakov; Leonid_Zimakov@trimble.com
English Abstract:
We will discuss and show the results obtained from an integrated SeismoGeodetic System, model SG160-09, installed in the Chilean National Network. The SG160-09 provides the user high rate GNSS and accelerometer data, full epoch-by-epoch measurement integrity and, using the Trimble Pivot™ SeismoGeodetic App, the ability to create combined GNSS and accelerometer high-rate (200Hz) displacement time series in real-time. The SG160-09 combines seismic recording with GNSS measurement in a single compact, ruggedized package. The system includes a low-power GNSS receiver powered by the latest Trimble-precise Maxwell™6 technology. The receiver incorporates on-board GNSS point positioning using Real-Time Precise Point Positioning (PPP) technology with satellite clock and orbit corrections delivered over IP networks. The seismic recording includes an ANSS Class A, force balance triaxial accelerometer with low power, 24-bit A/D converter. The SG160-09 processor acquires and packetizes both seismic and geodetic data and transmits it to the central station using an advanced, error-correction protocol with back fill capability providing data integrity between the field and the processing center.
The SG160-09 has been installed in the seismic station close to the area of the M8.2 Iquique earthquake of April 1, 2014, in northern Chile, a seismically prone area at the current time. The hardware includes the SG160-09 system, external Zephyr Geodetic-2 GNSS antenna, and high-speed Internet communication media. Both acceleration and displacement data was transmitted in real-time to the National Seismological Center in Santiago for real-time data processing using Earthworm / Early Bird. Command/Control of the field station and real-time GNSS position correction are provided via the Pivot software suite. Data from the SG160-09 system was used for seismic event characterization along with data from traditional stand-alone broadband seismic and geodetic stations installed in the network.
Our presentation will focus on the key improvements of the network installation with the SG160-09 system, rapid data transmission, and real-time data processing for strong seismic events and aftershock characterization as well as advanced features of the SG160-09 for Earthquake and Tsunami Early Warning system.
