EGU 2016 - Nanometrics Event Schedule - Booth # G20
Join Nanometrics in Vienna, Austria from April 17 to 22 for the General Assembly 2016 of the European Geosciences Union (EGU). Scientists from all nations will be presenting their research and discussing new ideas in all areas of geosciences. Nanometrics researchers will be presenting their latest research in the areas of polar direct-bury installation, ocean-bottom instrumentation, tilt and latency in early warning systems as well as a full short course on direct bury techniques and best practices.
Wednesday, April 20
|SC64: “Direct Burial and the Advance of Broadband Seismic Studies”|
|Convener: Tim Parker|
|17:00||Nanometrics Customer Appreciation Event|
|Join us at booth #G20 to toast the success of our valued customers!|
Thursday, April 21
Session: GD8.3/EMRP4.9/SM7.6: Exploring crust and mantle under the oceans: innovative instrumentation, processing and interpretation of ocean-bottom data (co-organized)
|EGU2016-11915: “LOBSTER - The Next Generation”|
|Presenter: Arne Schwenk|
Session: SM7.2/G6.2: New developments in seismic and geodetic instrumentation (co-organized)
|X1.263: “Potential Applications of an Integrated Seismic, Tilt and Temperature Instrument”|
|Presenter: Tim Parker|
Session: CR2.2: Glacier monitoring from in-situ and remotely sensed observations
X3.231: “Direct Burial Broadband Seismic Instrumentation that is Rugged and Tilt Tolerant for Polar Environments”
|Presenter: Tim Parker|
On-booth poster paper
Stop by our booth to see “Sources of latency and associated design trade-offs in earthquake early warning systems” by David Easton et al., a poster being presented at the 2016 Seismological Society of America Annual Meeting. David will be on hand to discuss his findings.
Nanometrics Inc, Ottawa, Canada
Please join us for an open workshop on direct-bury broadband seismic sensor deployments. There will be presentations on direct-bury deployments and techniques and results from case studies along with discussions of new community-driven initiatives to collect standardized state-of-health and metadata on portable deployments.
The agenda starts with a few talks from some of the geophysical facilities and individuals who are exploring these techniques. There will also be time for attendees to provide 5-minute (or less) flash presentations on their experiences (please bring yours!) and a question-and-answer period on any topics related to temporary, experiment-driven broadband deployments. We’ll conclude with a conversation on how to continue moving forward best practices in portable broadband sensor deployment.
K.U.M. GmbH, Kiel, Germany
Since 1997 K.U.M. GmbH designs and manufactures Ocean Bottom Seismometer. During the last three years we designed a new instrument, which is presented here. Higher resolution, higher accuracy and less power consumption led to an unique instrument, the worlds smallest broadband long-term OBS. Key data are: 32 bit, 143dB, 300mW, 120 sec, 200kg deployment weight, size of half a palette.
Geoffrey Bainbridge, Tim Parker, Sepideh Karimi, and Peter Devanney
Nanometrics Inc, Ottawa, Canada
Force feedback seismometers provide mass position outputs, which represent the time-averaged feedback force applied to each inertial mass, in order to cancel external forces and keep it balanced at its center point. These external forces are primarily due to tilt and temperature. In a symmetric triaxial seismometer, tilt and temperature effects can be distinguished because temperature affects all 3 axes equally whereas tilt causes a different force on each axis. This study analyzes the resolution of tilt and temperature signals that can be obtained from a force-feedback seismometer, and the potential applicability of this data to applications such as volcano monitoring and cap rock integrity monitoring. Also the synergy of a combined seismic, tilt, and temperature instrument is considered.
Direct Burial Broadband Seismic Instrumentation that are Rugged and Tilt Tolerant for Polar Environments
Tim Parker (1), Paul Winberry (2), Audrey Huerta (2), Geoff Bainbridge (1), and Peter Devanney (1)
(1) Nanometrics, (2) Central Washington University
The integrated broadband Meridian Posthole and Compact seismic systems have been engineered and tested for extreme polar environments. Ten percent of the Earth’s surface is covered in glacial ice and the dynamics of these environments is a strategic concern for all. The development for these systems was driven by researchers needing to densify observations in ice-covered regions with difficult and limited logistics. Funding from an NSF MRI award, GEOICE and investment from the vendor enabled researchers to write the specifications for a hybrid family of instruments that can operate at -55C autonomously with very little power, 1 watt for the Meridian Compact system and 1.5 watts for the Meridian 120PH. Tilt tolerance in unstable ice conditions was a concern and these instruments have a range of up to +/-5 degrees. The form factor, extreme temperature tolerance and power load of the instruments has reduced the bulk of a complete station by 1/2 and simplified installation greatly allowing more instruments to be deployed with limited support and a lighter logistical load. These systems are being tested in the Antarctic at South Pole Station and McMurdo for the second year and the investment has encouraged other instrument and power system vendors to offer polar rated equipment including telemetry for ancillary support.
Chris Cordahi, David Easton, Tim Hayman & Ross MacCharles
Nanometrics, Ottawa, ON, Canada
Low latency is a key contributor to the success of an Earthquake Early Warning (EEW) system. There are several points where latency is introduced between the instant in time that a digitizer produces a set of samples across its analog sensor channel inputs and the point at which the corresponding data reaches its destination for EEW analysis outside the instrumentation and networking domains. Typically long distances separate data sources from the location at which analysis is performed. These points of latency arise out of software, mathematical, and networking as well as physical constraints imposed upon the digitizer and associated communication systems. System designs must account for tradeoffs between latency and resource (CPU) utilization, which has an effect on power consumption, and communication network bandwidth. Designers of seismological instrumentation used for EEW deployments must keep these trade-offs in mind and make clever implementation choices to minimize delay. System integrators and network operators must be fully aware of latency and its contributors in order to make the right configuration choices when commissioning EEW systems to ensure the lowest possible latency without compromising the accuracy of the early warning data product. We illustrate the tradeoffs being made at the identified latency points using an analysis of a typical deployment of a digitizer streaming live seismic data to a central site utilizing a Very Small Aperture Terminal (VSAT) communication system.
Apr 14, 2016