Seismic Monitoring – geovision.co.bw

REF TEK iFSC

geovision_ws42tg — Wed, 07 Jun 2023 01:33:42 +0000

The Field Setup Controller (iFSC) software app was developed for command/control of the Trimble REF TEK 130 Recorders in the field. iFSC is an application designed to work with an iOS device. iFSC is used to edit and program the acquisition parameters of the 130 Recorder via the Serial connector.

In using iFSC, the user can communicate and operate a 130 Recorder in the field to provide full station control during portable or permanent seismic station deployments.

The iFSC application can be downloaded from the App Store.

The new REF TEK WiFi Serial Adaptor, which connects the iOS device to the 130 Recorder, is an alternative to the current iFSC Cable. Either the WiFi Serial Adaptor or iFSC-Cable are necessary for command/control functionality of the app and for downloading information from the 130 Recorder to the hand held iFSC Controller.

Key Features

Designed to command/control of the REF TEK 130 family Recorders in the field
Works with an iOS device
Capability to edit and program the acquisition parameters of the 130 Recorder via the Serial connector

REF TEK Compass Software

geovision_ws42tg — Wed, 07 Jun 2023 01:32:10 +0000

COMPASS is a very powerful and user-friendly interactive software providing 130 Recorder users both weak and strong motion comprehensive data processing tools.

COMPASS has seven drop down menus. Four of the menus (File, View, Time Domain, and Measurement) are for data utilities and previewing and pre calculation data filtering and measuring. The other three menus (Frequency Domain, 3-d component, and Location) are for calculation of earthquake physical characteristics.

Key Features

Powerful and user-friendly interactive software to provide weak and strong motion comprehensive data processing tools.
Includes four menus (File, View, Time Domain, and Measurement) for data utilities and previewing and pre calculation data filtering and measuring.
Includes three menus (Frequency Domain, 3-d component, and Location) are for calculation of earthquake physical characteristics.

Trimble Kestrel System SG160-09

geovision_ws42tg — Wed, 07 Jun 2023 01:30:13 +0000

In an instrument category all it’s own the Trimble Kestrel seismogeodetic system integrates a high-sample rate strong motion accelerograph with Trimble’s latest GNSS reference receiver technology in a single instrument, delivering quality data and reducing installation time.

The low-power, 336-channel GNSS receiver powered by the latest Trimble Maxwell 7 Technology, supports tracking of GPS, GLONASS, Galileo, BeiDou and QZSS signals, ensuring the GNSS data is robust and reliable. And, featuring an Advanced National Seismic System (ANSS) Class A force-balance triaxial accelerometer, Kestrel delivers better data at even the quietest sites at 200 Hz and transmits ultra-low latency data for Earthquake Early Warning (EEW).

Using an advanced Kalman filter algorithm Trimble’s 4D Control software combines, 10 Hz GNSS displacements and 200 Hz accelerometer data to produce 200 Hz displacement data in near real-time, eliminating the loss of static offsets that occur when double-integrating accelerometer data.

Kestrel now incorporates on-board GNSS Precise Point Positioning (PPP) using Trimble CenterPoint RTX technology delivered through the L-Band signal. Trimble RTX remains locked onto the real-world absolute position, which is critical when analyzing and responding to movement data. These features ensure Kestrel’s data recording is not affected during communication delays or complete outages (often occurring during natural disasters), resulting in more complete data ‒ when it matters.

Key Features

Combines Global Navigation Satellite System (GNSS) and seismic accelerometer measurements
336 Channel GNSS receiver features Trimble’s latest Maxwell 7 technology and Precise Point Positioning (PPP) technology, delivering centimeter level accuracy over L-band or IP using Trimble’s Centerpoint RTX corrections
Advanced National Seismic System (ANSS) Class A Triaxial Accelerometer
Ultra -Low latency data transmission for EEW

Applications

With an IP67 rating, the compact and rugged Trimble Kestrel seismogeodetic system is ideal for deployment in extreme environments including:

Monitoring civil structures
Monitoring earthen structures
Earthquake Early Warning (EEW) Networks
Volcano monitoring
Seismic Hazard Mitigation

REF TEK Wrangler

geovision_ws42tg — Wed, 07 Jun 2023 01:28:22 +0000

The all-new REF TEK Wrangler high resolution broadband seismic recorder offers powerful performance with the latest seismic measurement technology in a lightweight and easy to use housing. Whether your deployment is a portable or permanent installation, the flexible configuration delivers reliable, robust data from geophysical sensors when and where you need it.

The Wrangler is REF TEK’s latest generation broadband seismic recorder featuring a 32-bit A/D performance boost and boasting a large dynamic range. This enhanced dynamic range enables the Wrangler to record very small vibrations from seismic sensors providing detailed data for scientific analysis.

Key Features

Greater than 142 dB dynamic range delivers detailed event data, for high quality scientific analysis
The Built-in Seedlink server provides robust data transmission, so you always have all the data from your sensors
8 GB of dedicated non-volatile memory means a large data transmission ring buffer, just in case a communication outage occurs
Environmentally protected removable mass data storage, makes swapping USB drives effortless
Small and lightweight for easy backpack friendly deployment

Applications

Permanent and temporary broadband seismic installations including:

Local and regional broadband seismic networks
Aftershock and portable deployments
Earthquake Early Warning networks (EEW)
Microzonation earthquake studies

REF TEK 147A

geovision_ws42tg — Wed, 07 Jun 2023 01:26:30 +0000

The 147A Low Noise model is +/- 4g full scale and provides excellent dynamic range which is useful when used with 24-bit digitizers like the Trimble REF TEK 130S Series Data Loggers and the 130-MC recorder.

This accelerometer uses a state-of the-art force balance feedback technique to make up for the mechanical characteristic limitations of conventional accelerometers. Using a force balance feedback sensor overcomes the shortcomings of nonlinear distortion and threshold of sensitivity of elastic measuring parts.

The 147A’s high sensitivity, large linear range, high resolution and high dynamic range makes it suitable for free field applications such as microzonation, site response, earthquake monitoring and more.

Key Features

State-of-the-art, high resolution, force-balance Accelerometer
Converts acceleration signals into voltage signals to measure low and ultra-low frequency motion
Low noise
Sensitivity and offset stable over wide temperature range
Available in uniaxial and triaxial configuration

Applications

Free Field Reference
Building Arrays
Structural Monitoring
Site Response
Aftershock Studies

REF TEK Colt

geovision_ws42tg — Wed, 07 Jun 2023 01:24:44 +0000

The new REF TEK Colt compact broadband seismometer is ready to take on the challenges of portable deployments, and also the rigors of local and regional permanent networks. By using a force-balanced electronic feedback circuit design, the REF TEK Colt has exceptionally low self-noise allowing it to better measure ground motion even at the quietest of sites.

Scientists requiring portable or small footprint valt style seismometers now have high dynamic range instrument available for quick easy deployment.

Key Features

High dynamic range for portable and vault style installations
Exceptionally low self-noise
Small and lightweight
Shock resistant housing
Robust automatic mass unlock system

Applications

Permanent and temporary broadband seismic installations including:

Local and regional broadband networks
Aftershock and portable deployments
Earthquake early warning networks (EEW)v

151B-120 Observer

geovision_ws42tg — Wed, 07 Jun 2023 01:23:10 +0000

The Observer broadband seismometer is used worldwide for local, regional and global seismicity studies. It contains one vertical and two horizontal independent sensors with built-in electronic feedback circuit and features low noise with a large dynamic range.

The low self-noise performance makes the Observer an ideal seismometer for seismicity studies in different installation configurations, including observatory and portable, surface and posthole applications. The Observer broadband seismometer is a force-balance feedback sensor available with frequency bandwidth 0.0083 Hz (120 sec) – 50 Hz.

he 151B Observer has built-in leveling and mass lock/unlock facilities. The leveling mechanism includes two bubble levels, three adjustable feet and three locknuts, located on the chassis.

A mass zero-position adjusting mechanism performs automatic mass centering. As soon as the seismometer is powered it checks the zero position of each component’s mass and automatically adjusts the zero position when required.

Key Features

Low self-noise over a wide bandwidth
Low power consumption
Force-balance electronic feedback
Robust mass locking mechanism
Portable, and easy installation

Applications

Local and regional seismic networks
Broadband surface or posthole installation
GSN installation

REF TEK 130-SMHR

geovision_ws42tg — Wed, 07 Jun 2023 01:21:00 +0000

The 130 Strong Motion High Resolution Recorder combines the functionality of the 130S Broadband Seismic Recorder and an advanced low-noise, force-balance, triaxial accelerometer to deliver accurate data and information for seismic events, including their impact on buildings and structures.

The 130-SMHR meets the USGS Advanced National Seismic System (ANSS) specifications for strong motion reference stations for deployment in urban areas and has an internal high resolution force-balance accelerometer with a dynamic range >155dB, and a high precision oscillator for precise time-keeping. The time keeping accuracy is ±10 µsec with GPS locked and a validated 3-D fix.

The 130-SMHR advanced communication features include TC/IP over Ethernet and asynchronous serial. To setup and control the 130-SMHR you can use the iFSC Controller or a desktop computer running the RTI software. The 130-SMHR case allows the installation of an internal battery to provide backup power for more than 48 hours.

An LCD displays health and status information, and the command/control interface allows the users to program and examine the instrument’s operating parameters and perform important diagnostic functions, such as acquisition status, sensor calibration and trigger parameters.

Key Features

Low noise force-balance accelerometer
Wide dynamic range
Simultaneous telemetry and local-recording
Low power

Applications

Free-field recording
Structural monitoring for buildings, bridges and dams
Regional telemetry networks
Aftershock studies

REF TEK 130-MC

geovision_ws42tg — Wed, 07 Jun 2023 01:19:18 +0000

The 130-MC contains REF TEK’s third generation digital recording technology, it’s a robust multi-channel recorder designed for civil engineering and structural monitoring requirements. Built-in communication capabilities allow for real-time and on-demand data collection.

The multi-channel recorder is available as a twelve channel or eighteen channel recording system with advanced telemetry for real-time data collection on all channels.

The 130-MC’s network capabilities allow multiple units be interconnected for more complete coverage of movement in a building or on a structure such as a bridge or a dam.

In the case of a power outage, the 130-MC recorder will continue data acquisition, running on four internal 12 V DC batteries for 72 hours. If power is unavailable for more than 72 hours the system shuts down, then, when AC power begins again the 130-MC recorder will resume its previous data acquisition mode and begin re-charging the batteries automatically.

Using REF TEK’s Interface Software (RTI) with a local or remote PC, the user can set all data recording parameters including continuous or triggered data streams, independent channel selection, sampling rate, and trigger settings with independent trigger thresholds on a per channel basis, external alarm settings, and automatic notification settings for state-of-health messages and recorded events.

The user can access the multi-channel flash memory cards to retrieve any recorded event files and state-of-health files, or upload firmware updates and preset parameter files. Updating the system firmware can be completed with a simple file upload and reset of the recorder.

For data analysis the REF TEK Strong Motion Data Processing software (Compass) can calculate and display functions such as CAV, Raw and Corrected Acceleration, Arias Intensity, Velocity, Displacement, Response Spectra, PSDs, and FFTs. This software offers the user the option to view and analyze all calculations simultaneously or individually.

Key Features

12 or 18 recording channels
24-bit A/D Resolution
IP Based Communications over Ethernet
Internal, analog POTS modem for dial-up communication
3 independent Relay closures for alarming purposes
Embedded and removable mass data storage
Remote alerts for event and alarm triggers

Applications

Structural monitoring for buildings, bridges and dams

Dense Accelerometer Arrays

Seismic Monitoring

geovision_ws42tg — Wed, 07 Jun 2023 01:16:14 +0000

Trimble Infrastructure’s portfolio of market-leading advanced positioning solutions (GNSS), applications, software and state-of-the-art seismic recorders and sensors, provide integrated proven tools for geodetic, seismological, and meteorological scientific research and monitoring applications.

Our robust technologies provide an unprecedented level of capability and reliability required by the most demanding scientific applications, from localized projects to the largest GNSS networks in the world.