Güralp, the leading global provider of force feedback seismic monitoring instrumentation is launching a new generation, feature-rich, subsurface seismometer that delivers ‘plug-in-and-go’ installation for boreholes up to 2000 m deep and shallow posthole applications. The Radian is a broadband, triaxial, digital seismometer designed using a state of the art sensor that means it can operate at any angle. This capability combined with its compact form; unique data capture and instrument management features makes it ideal for rapid and temporary seismic deployments, especially in areas of high cultural noise. Phil Hill, Engineering Director at Güralp explains the design approach to the Radian: “We understand how dramatically noise performance improves with deployment in the subsurface, but it can be time consuming and expensive to undertake. With the Radian we set out to design an instrument that would provide the sub-surface broadband coverage the geophysical community wants, but in a much more accessible ’plug in and go’ package. Because the Radian operates at any angle, installation times are significantly reduced – for example, posthole instruments can be installed with a hand auger and checked for integrity with the Bluetooth Android App in a fraction of the time and cost it would take to construct a sub-surface vault.” How the Radian works: The sophisticated sensor inside the Radian allows the masses to operate at any angle, the Surface Interface Unit (SIU) receives data from the Radian’s internal magnetometer and MEMS accelerometer to optionally realign sensor data to true geographic orientation. The SIU delivers Ethernet data communication and can also be accessed via Bluetooth Android App to check installation integrity without physical disturbance. Further instrument management features include dual redundant MicroSD card storage for hot swapping without data loss and; streaming of instrument response and calibration parameters in Dataless SEED format. Güralp is exhibiting the Radian on stand 18 at the European Geosciences Union General Assembly in Vienna, Austria all this week (18 -22 April). If you are attending please make time to visit our stand. Engineering Director Phil Hill and the Güralp team will be on hand to show you how it works and answer any questions you have. If you are not attending EGU, you can view the Radian brochure...
read moreGüralp, the leading global provider of force feedback seismic equipment has launched a new low-power, portable digitiser that allows users access to data and instrument controls via Cloud technology. The Güralp Minimus is a small, portable, 24 bit, four channel digitiser packed with a host of features that make it the ideal plug and play solution for rapid deployments. Offering multidisciplinary functionality, the Minimus can simultaneously accommodate an analogue seismic sensor; an infrasound input for capture of airborne shock; a digital Radian posthole or borehole feed; and its own internal MEMS accelerometer. Integrated Ethernet connectivity allows the Minimus to be controlled remotely using Güralp’s new Discovery software platform (free to download) or via a standard web browser. The benefit of Discovery is that it allows the user to identify the instrument IP address via a Cloud registry server without the need for static IP address arrangements. Discovery also allows for simpler instrument and data management with access to hardware State-of-Health (SoH), data streaming; GPS location; response and calibration parameters. Users can select sample rates of up to 5000 samples per second with the option to simultaneously stream multiple sample rates in addition to the recording rate. Reliable deployments For added confidence in the field, Güralp Vü, a Bluetooth App, displays waveforms, orientation, temperature and humidity data, for instant checking of installation integrity. Data storage is hot swappable for uninterrupted data retrieval with dual redundant microSD cards to ensure data integrity. Phil Hill, Technical Director “The Minimus is our new generation of digitiser, it may be small, but we have packed it with the latest high-tech hardware. As well as increased speed and reliability of digitisation, the modern communication interfaces have created a step change to the user experience. We really wanted to design a digitiser that would be suited to the Earthquake Early Warning (EEW) community. Minimus can run low latency causal filters simultaneously with traditional acausal filters and this, combined with its high processing speed and communication capability makes it ideal for EEW systems. ” You can read more in the Minimus brochure. Güralp is exhibiting the Minimus on stand 5 (second floor) at the Japan Geoscience Union Annual Meeting Chiba-city, Japan (22 -26 May). Clare Sweeney, Stuart Allardice and our Japanese distributors, Kyokuto Boeki Kaisha, Ltd will be on hand to show you how it works and answer any questions you...
read moreGüralp Systems customer, Australian Geophysical Observing System (AGOS) has published initial findings from an active marine seismic survey off the coast of Australia showing the benefits of using ocean bottom seismometers (OBS) in addition to hydrophone streamer based surveys. Güralp provided 20 OBS instruments, engineered to withstand ocean depths to 6000m. Each OBS incorporated a Güralp 6T-OBS 3-component broadband (0.0167 Hz–100 Hz) seismometer, with a titanium housing; a hydrophone (1Hz–30KHz) attached to the fourth channel and a high precision Güralp Real Time clock with accuracy of better than a microsecond. The instruments can remain on the seafloor continuously recording for up to 12 months and can be commanded to return to the surface using an acoustic communication link. AGOS found that the Güralp OBS allowed for recovery of information from much deeper crustal features which would not typically be recovered via streamer based surveys during marine seismic acquisition. In addition they found that the hydrophone records considerably less information and appears to be more sensitive to water-born multiples than the seismometer. AGOS identified a number of findings from their recent surveys for the future of OBS technology development which include: The possibility to image whole crust and upper mantle velocity distributions and unequivocally define the Moho boundary from analysis of both reflected and refracted phases, generated by an industry standard airgun array with certain specifications. Extension of 3D imaging capability, utilising OBS-recorded signal from 3D surveys at larger offsets than achievable with streamer survey configurations. Analysis of background noise and understanding the interaction of broadband airgun generated signal and the ocean/Earth system. Further possible uses of the OBS instruments identified by AGOS include: passive seismology and plate tectonic reconstructions earthquake and geo-hazard studies monitoring of energy from construction on the ocean floor and its impact on marine life monitoring sub-seafloor CO2 injection for long term storage. Dr Alexey Goncharov, Principle Scientist at Geoscience Australia commented: “Australian National OBS Fleet instruments that were built by Güralp have proven their capability to record high quality data from commercial seismic surveys airguns to very large offsets. There is significant interest from industry, government and researchers for future OBS surveys. We are currently processing data from the Shell DAB survey and have obtained fantastic results for some long refraction lines, including high-quality first arrivals at large offsets. Moho refractions are clearly visible in the majority of the refraction profiles. We are also processing ‘eavesdropped’ signal from nearby 3D reflection shots and exploring the full capability of this unique dataset. Nothing comparable in data quality and coverage exists anywhere in the world at the moment.” Chris Potts Executive Chairman at Güralp added: “We are very pleased that our instruments have produced such excellent quality data for AGOS, and that this innovative use of deep ocean instruments with airgun sources has proved so effective. We are continuing to develop our Ocean Bottom Seismometers and intend to remain a global leader in the design, build and deployment of these complex instruments.” You can read the full AGOS article here. These results follow earlier success on the same project where the Güralp OBS were used to increase the aperture of the streamer survey from eight to thirty kilometres. You can read more about this here. About Geoscience Australia: Geoscience Australia applies geoscience to Australia’s most important challenges...
read moreVisit us at 11th Canadian Conference on Earthquake Engineering , Victoria/BC 21st to 24th July . Ideaas Group is proud to host Guralp Systems Management during this conference introducing our latest products and technologies. You may contact us on sales@ideaasgroup.com to book appointments with Mr. Nathan Pearce , Sales Director of Guralp Systems...
read moreGCF Viewer Ideaas Group is pleased to announce the release of a new GCF viewer App for the Android mobile platform by Guralp Systems. You can see details and the install link for this app on the google Play Store, at https://play.google.com/store/apps/details?id=com.guralp.gcfviewer&hl=en For this initial release, only an English language version is available. Please note that this app should NOT be considered as a “Scream for mobile”. It is intended for viewing GCF data, either from file or live servers. Guralp Systems are unable to provide a public live data server, however you can download a sample GCF file from our web site at http://www.guralp.com/download/sample.gcf...
read more
