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compact instruments

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Journal Article
Published: 01 February 2014
Clays and Clay Minerals (2014) 62 (1): 13-19.
... salts, and phosphonium-modified Mts were characterized by thermogravimetric analysis (TGA) using a Mettler Toledo (Leicester, UK) instrument (SDTA 851 e ). Samples were heated to 1200°C (except for the phosphonium salts which were heated to 900°C) at a heating rate of 10.0 °C/min under a N 2 flow of 20...
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Journal Article
Published: 20 March 2018
Journal of Environmental and Engineering Geophysics (2018) 23 (1): 77-88.
...). The guide tunnel is very important because it was excavated more quickly due to its smaller diameter relative to the main tunnel. This tunnel can serve as a guide for the prediction of geological disasters and for the delivery of geological instruments, e.g., transporting the UNMR apparatus for advanced...
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Journal Article
Published: 01 February 2007
Bulletin of the Seismological Society of America (2007) 97 (1B): 91-99.
...Duncan Carr Agnew; Kathleen Hodgkinson Abstract For the strainmeter component of the Plate Boundary Observatory, filters are needed to produce low-frequency series (5-minute samples) from the higher- frequency (1 Hz) data generated by the instruments. We present design methods for finding filters...
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Journal Article
Journal: Elements
Published: 01 August 2018
Elements (2018) 14 (4): 282-283.
... using low vacuum mode and without sample coating. I have long been on the lookout for an alternative sample documentation strategy. This is the background as to why I contacted the company JEOL Germany to inquire about the JSM-IT200, the newest in their line of compact SEM instruments...
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Journal Article
Published: 01 September 2015
Bulletin of the Seismological Society of America (2015) 105 (5): 2420-2432.
... temporal trends in noise (instrument, installation, and site noise), signal‐to‐noise ratio for teleseismic and local earthquakes, and magnitude‐squared coherence of both noise and earthquake signal recordings. We found that noise on the vault sensors is higher during the transition from spring to summer...
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Series: Geological Society, London, Memoirs
Published: 01 January 2014
DOI: 10.1144/M39.15
EISBN: 9781862396821
... to forest cover, for navigation and to mark the instrument locations. Fig. 15.13. Installation of Texan seismometer stations. Texans were installed in December 2007 just before the airgun shooting. ( a ) Hikers carried Texans across rugged terrain of the Centre Hills, mountainous rainforest with steep...
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Journal Article
Published: 01 November 2010
Seismological Research Letters (2010) 81 (6): 972-983.
...A. T. Ringler; C. R. Hutt The Nanometrics Trillium Compact broadband seismometer is a vault style seismometer. The sensor has a flat velocity response from 120.2 seconds to 108 Hz ( Nanometrics 2009 ). Our self-noise model ( Figure 9 ) for the Trillium compact was calculated from six power...
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Journal Article
Journal: Geophysics
Published: 26 February 2016
Geophysics (2016) 81 (2): E103-E112.
... areas. This process is similar to that formerly used in resistivity prospection. For the study of soil (environmental, engineering, or archaeological explorations), low-frequency electromagnetic instruments (referred to as Slingram EMI) have highly useful specificities. They are light, are easy to move...
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Journal Article
Published: 29 November 2016
Bulletin of the Seismological Society of America (2016) 107 (1): 97-105.
... the edges of the embayment with average velocities increasing with increasing sediment thickness, consistent with increased sediment compaction. Fundamental resonance frequency for S waves ranges from 0.2 to 0.4 Hz for the embayment sediments. Electronic Supplement: Two figures showing the synthetic test...
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Journal Article
Published: 01 January 2002
Journal of Sedimentary Research (2002) 72 (1): 116-128.
...David A. Budd Abstract How compaction can yield a progressive decrease in the permeability and pore structure of carbonate grainstones is not well documented. In this study, the destruction of permeability by compaction relative to early cementation is examined in forty-five shallow-buried (30-440...
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Journal Article
Journal: The Leading Edge
Published: 01 December 2005
The Leading Edge (2005) 24 (12): 1234-1242.
... Field—Still on plateau after 20 years of production” by Barkved et al. (SPE 83957, 2003). Pore fluid, geometry top reservoir are discussed in “Simulation of a North Sea field experiencing significant compaction drive” by Cook and Jewell (SPE 29132, 1996). Laboratory measurements of seismic velocities...
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Journal Article
Published: 21 June 2017
Seismological Research Letters (2017) 88 (5): 1327-1332.
... and grouted in‐place to provide better coupling. One of the close‐in stations (NS14) located at a distance of ∼ 200    m from the sources was equipped with a short‐period Trillium Compact sensor. The recording equipment was placed in plastic tubs for protection. These stations recorded at a sampling...
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Journal Article
Journal: Geophysics
Published: 31 August 2006
Geophysics (2006) 71 (5): Q19-Q24.
... chemical explosives, which are inexpensive, compact, and convenient. Over the years, the need to perform experiments in urban areas (such as downtown Los Angeles), personnel safety, signal-processing advantages, and national security have led to development of controllable electromechanical sources...
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Journal Article
Published: 01 August 2011
Vadose Zone Journal (2011) 10 (3): 1097-1104.
... and visual data for quantitative and qualitative assessment. * Corresponding author ( mark.blonquist@utah.edu ). Ferré et al. (1998) defined the sampling volume of a porous medium measurement instrument as the volume of sample that contributes to the measurement. Essentially, the sampling volume...
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Series: Geological Society, London, Special Publications
Published: 01 January 2017
EISBN: 9781786202949
... support of the project SR/S4/ES-402/2009 and the Director, IIT, Roorkee for providing the analytical facilities in the National Facility for Isotope Geology and Geochronology at Institute Instrumentation Centre, IIT, Roorkee. We thank all the lab mates, particularly Dr Sangeeta Gupta and Ibrahim Yousuf...
Journal Article
Published: 01 May 2013
Vadose Zone Journal (2013) 12 (2): vzj2012.0160.
... ). This makes the Theta Probe more sensitive to compaction due to soil displacement caused by probe insertion. Table 1. Commercially available electromagnetic (EM) sensors with various outputs related to volumetric water content (θ) [i.e., dielectric permittivity (ε), voltage, period, and count...
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... Abstract This field trip consists of stops in four locations (Fig. 1 ) that provide insight into the seismic retrofit and strong motion instrumentation of the Golden Gate Bridge ((Figs. 2 ) and 3 ). Only one...
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Series: Special Publications of the Society of Economic Geologists
Published: 01 January 2014
DOI: 10.5382/SP.18.12
EISBN: 9781629499291
... in mineral exploration, concluding that for medium to hard formations that are not excessively abrasive (i.e., analogous to sedimentary sequences drilled in the oil and gas sector), rotary drilling with a polycrystalline diamond (PDC) or thermally stable polycrystalline diamond compact (TSP) bit with a low...
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Journal Article
Published: 01 June 2011
Bulletin of the Seismological Society of America (2011) 101 (3): 1233-1241.
... the TT70-T005 full-size instrument to the C026 compact model in terms of noise reduction, while the most recent Observatory SG types, OSG044 at Bad Homburg (Germany) and OSG052 at Sutherland (South Africa), do not show any further improvement with respect to the compact models, respectively CD30 and CD037...
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Journal Article
Published: 01 April 2017
Vadose Zone Journal (2017) 16 (4): 1-16.
... of agriculture to meet food targets of a rapidly growing world population are likely to accentuate already acute problems of soil compaction and deteriorating soil structure in many regions of the world. The key role of soil structure for soil functions, the sensitivity of soil structure to agronomic management...
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