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Topic: Radiometrics

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	Radiometrics
		Radiometrics is a measure of the natural radiation in the earth's surface, which can tell us about the distribution of certain soils and rocks.
		Radiometrics is also useful for the study of geomorphology and soils.
		Radiometric data are commonly displayed as a map, with colours representing sample values.
	www.dpi.vic.gov.au /DPI/Vro/vrosite.nsf/pages/landform_glossary_radio (1200 words)

	Mammoth Geophysical
		Radiometric or gamma ray surveys, which relay on the surface measurement of natural gamma radiation, have been popular since the 1940’s.
		When asked to review reports of radiometric highs and lows, the first question should be, "High and low compared to what?" Neither the clients nor the service companies have ever given a satisfactory answer based on radiation physics.
		KUTT radiometric successes are not limited to Kentucky or to oil fields.
	www.mammoth-geo.com /news6.htm (1673 words)

	The Age of the Earth
		Most of the other measurements for the age of the Earth rest upon calculating an age for the solar system by dating objects which are expected to have formed with the planets but are not geologically active (and therefore cannot erase evidence of their formation), such as meteorites.
		Rates of radiometric decay (the ones relevant to radiometric dating) are thought to be based on rather fundamental properties of matter, such as the probability per unit time that a certain particle can "tunnel" out of the nucleus of the atom.
		Emery (1972) is a comprehensive survey of experimental results and theoretical limits on variation of decay rates.
	www.talkorigins.org /faqs/faq-age-of-earth.html (4975 words)

	Consulting Potential Field Geophysics, Airborne Gamma-Ray Spectrometry workshop
		The basic purpose of radiometric surveys is to determine either the absolute or relative amounts of U, Th., and K in the surface rocks and soils.
		For less ambitious projects perhaps, the optimum strategy would be to use a light fixed-wing aircraft, carrying a relatively small crystal to outline areas of high radioactivity using the total count as the primary indicator, to be followed by a high-sensitivity helicopter-borne survey to map the radioelement abundances in the areas selected for detailed study.
		Even though residual soils which have not been moved retain only some of the radioactive elements that were present in their parent rocks, their relative abundances tend to remain indicative of the parent, and thus the underlying parent rock can sometimes be mapped through a thin layer of residual soil.
	www.geoexplo.com /airborne_survey_workshop_rad.html (6902 words)

	Application of radiometrics for land capability assessment
		Airborne radiometrics is a measurement of the radioactive emission from the surface 30cm of the soil, which results from the natural decay of isotopes in the soil.
		The radiometric data for Cootamundra was at 150m spacing at an elevation of 80 – 100m.
		However, because parent material is a primary determinant of the radiometric signal as well as for soils, and because soils derived from different parent material can produce a similar radiometric signal, geology is used as a reference when undertaking the initial classification (Tunstall, 1995).
	www.regional.org.au /au/gia/06/185hazell.htm (4095 words)

	GRDC - Ground Cover Issue 51 - Looking into your soil from on high and on low
		At the top on the right is a gamma radiometric image from a 4000 hectare farm in WA farmed by Glenn Fretwell and family.
		He also said that gamma radiometrics was probably the most useful layer of information he has acquired for his farm.
		This is especially the case when biomass and yield analyses are combined with other datasets like gamma radiometrics and electromagnetics to support the interpretation of low and high performance zones.
	www.grdc.com.au /growers/gc/gc51/pa10.htm (1041 words)

	XmdvTool Home Page: Case Studies
		5 distinct channels (Spot, magnetics, 3 bands of radiometrics) are combined for a particular region in Western Australia.
		The third radiometrics band, which highlights Uranium, is the focus of exploration.
		The user brushes over the parallel coordinates display on the high Uranium region to identify 2 distinct "signatures", one with high potassium and low magnetics, and the other with moderate levels of each.
	davis.wpi.edu /~xmdv/cs_rs.html (151 words)

	Product Information
		Previous generation Radiometrics radiometers have been operated by independent experts since 1998, often in harsh environments.
		Radiometrics radiometer reliability and accuracy are proven during millions of hours of Tropical, Polar and Mid-Latitude operations.
		Radiometrics Microwave Profilers are the instrument of choice for continuous, accurate temperature, humidity and cloud liquid profiling.
	www.radiometrics.com /products.htm (386 words)

	A multichannel radiometric profiler of temperature, humidity, and cloud liquid
		The radiometric profiler observes radiation intensity at 12 microwave frequencies, along with zenith infrared and surface meteorological measurements.
		We compare radiometric, radiosonde, and forecast soundings and evaluate the accuracy of radiometric temperature and water vapor soundings on the basis of statistical comparison with radiosonde soundings.
		The accuracy of radiometric cloud liquid soundings is evaluated by comparison with cloud liquid sensors carried by radiosondes.
	www.agu.org /pubs/crossref/2003/2002RS002856.shtml (332 words)

	Radiometric Dating
		Radiometric dating--the process of determining the age of rocks from the decay of their radioactive elements--has been in widespread use for over half a century.
		Radiometric dating techniques indicate that the Earth is thousands of times older than that--approximately four and a half billion years old.
		The false radiometric ages of several million years are due to parentless argon, as described here, and first reported in the literature some fifty years ago.
	www.asa3.org /aSA/resources/Wiens.html (16626 words)

	Radiometrics Midwest Corp.
		Radiometrics is an American Association for Laboratory Accreditation (A2LA) accredited independent Electro-Magnetic Compatibility (EMC) testing and engineering center whose primary goal is to help our clients achieve compliance with domestic or international EMC/EMI specifications.
		Radiometrics is an industry leader having provided superior service since 1983.
		Its staff members are technical advisors to the International Standard Organization (ISO), chair domestic EMC standard groups and involved with several additional EMC working groups.
	www.radiomet.com (268 words)

	Preliminary Report on Geophysics of the Verde River headwaters region, Arizona (Site not responding. Last check: 2007-11-07)
		The goal of the aeromagnetic study is to improve understanding of the geologic framework as it affects groundwater flow, particularly in relation to the occurrence of springs in the upper Verde River headwaters region.
		Radiometric data were also collected to map surficial rocks and soils, thus aiding geologic mapping of the basin fill.
		The surficial materials on the eastern side of the Big Chino Valley are significantly lower in radioactivity and reflect the materials derived from the limestone and basalt east of the valley.
	geopubs.wr.usgs.gov /open-file/of00-403 (476 words)

	Radiometrics (Site not responding. Last check: 2007-11-07)
		Radiometric surveys measure the distribution of three radioactive elements (uranium, thorium and potassium) in the Earth's crust, by recording the gamma-ray radiation emitted during the decay of these elements.
		Approximately 90% of measured gamma rays are received from the top 30cm of the ground.
		Radiometrics can be done through airborne or ground surveys.
	www.ga.gov.au /education/minerals/radio.html (267 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		-- Visibility of the spacecraft's trajectory comes from radiometrics (doppler, embedded timing/ranging signals, triangulation techniques, etc.), which are reliant to some extent on knowledge of the condition of the telecommunication system aboard the spacecraft as well as reliability of DSN (Deep Space Network) stations on Earth.
		Until/unless a spacecraft is very close to a planet such that the planet's gravitational influence dominates all other factors, radiometrics are the sole visibility into trajectory (pointing is too crude at such distances to provide trajectory information).
		In short, radiometrics are your window into your trajectory, and working radiometrics is also an artform.
	quest.arc.nasa.gov /mars/ask/new/Trajectory_to_Mars.txt (361 words)

	Anchoring WaveTrain to ACS Extended Objects (Site not responding. Last check: 2007-11-07)
		We also verified that WaveTrain correctly models the radiometrics; for this purpose we compared WaveTrain results directly with theory, using the total received energy at the focal plane.
		Each speckle realization was generated as follows: To obtain the field amplitude, we took the square root of the source brightness pattern, then normalized it to take radiometrics into account.
		Apart from the issue of radiometrics, which we will address below, we conclude that WaveTrain is now well-anchored to ACS for modeling extended objects using multiple speckle realizations.
	www.mza.com /doc/anchor/acsspeckle.html (873 words)

	Resource Investor - Press releases - Contract Awarded for Airborne Radiometrics / Magnetics
		These companies staked known uranium showings and deposits, and then carried out airborne radiometric / magnetic surveys, which resulted in the location of new uranium showings in a number of areas (company press releases - November 05 to January 06).
		As a result of the exploration results and the rise in price of uranium, the CMB has seen extensive claim staking and exploration over the past couple of years making it the second most active area for uranium exploration in Canada.
		This work will consist of data compilation, airborne radiometric / magnetic survey followed by prospecting, and sampling to evaluate targets located by the survey.
	www.resourceinvestor.com /pebble.asp?relid=18317 (669 words)

	Buffalo Gold Ltd. - Free Market News Network
		The Julia Creek Project area is known to host very large deposits of vanadium/molybdenum rich clays, which have resulted from weathering of organic (oil) shales, which underlie much of the area.
		No known systematic previous exploration for uranium has been carried out in Buffalo’s new area due to the limited availability of radiometrics data to guide previous uranium explorers coupled with a general lack of uranium exploration in the past 2 to 3 decades due to market conditions.
		Where modern radiometrics data is available over the sedimentary package, it has anomalous response within the uranium channel.
	www.freemarketnews.com /Press-Release.asp?nid=4636 (501 words)

	Radmaps: geophysical radiometric maps
		It takes specialized instruments to measure this radiation and is often called "radiometrics".
		For the mineral explorationist, a radiometric map can indicate areas of uranium and other minerals and rocks.
		Stones can contain quantities of radiometric elements that give clue to their composition.
	www.radmaps.com (202 words)

	erdene
		These properties are characterized by well-defined zones of high radiometrics hosted within clastic sediments or carbonaceous siltstone.
		The targets are characterized by highly anomalous radiometrics measuring from 500 to 9,800 tcps (total counts per second), spectrometer values of 50 to 350 ppm uranium and rock geochemical assays ranging from 100 to 1,300 ppm uranium.
		Three target areas have been identified along a 2 kilometre long by 300 metre wide, northwest-trending zone of high radiometrics ranging from 500 to 2,700 tcps with spectrometer readings of 200 to 300 ppm uranium.
	www.shareholder.com /erd/ReleaseDetail.cfm?ReleaseID=172257 (1142 words)

	A In-flight Icing
		To test the three detection techniques Williams pre-processed radar data from dual-wavelength pairs by interpolating them onto a common range-time grid, and the data were smoothed by applying a weighted median filter.
		In response to these results, Radiometrics, Inc. is constructing receivers at 90 and 150 GHz which will be tested in winter 2002-2003.
		More detailed calculations, using measured ranges of IWP and RES, and realistic ice particle shapes and densities, should make it possible to bound the magnitude of the expected DTB and devise a means for real-time correction.
	www.rap.ucar.edu /asr2002/a-icing/a-inflight_icing.htm (3962 words)

	70084S02
		Radiometrics Corporation, 2840 Wilderness Place, Unit G, Boulder, CO 80301-5414; 303-449-9192
		Current microwave radiometer designs are inadequate for measuring low atmospheric water vapor concentrations crucial to global climate research.
		Radiometric profiler observations could also be used to improve chemical, biological, and nuclear dispersion forecasting; to improve long-range artillery accuracy; and for detection of radar ducting and aircraft icing conditions.
	www.er.doe.gov /sbir/awards_abstracts/sbirsttr/cycle20/phase1/220.htm (201 words)

	GRDC Methods Geochemical Exploration Oil & Gas Survey Nine component Hydrocarbon Analysis, Microbial, ...
		They can be used as a reconnaissance method as well as part of GRDC's hydrocarbon method.
		Radiometrics Digitally Acquired Full Spectrum (DAFS) gamma ray surveys.
		GRDC is not limited to the standard four channel surveys for Total Count, Potassium, Bismuth, or Thorium.
	www.grdc.com /sambasics.html (638 words)

	Praga3 Radiometrics ROI Processing - Principal Component
		The Praga3 Radiometrics extension to Oasis montaj enables you to map and process airborne and ground gamma-ray spectrometry data acquired by modern spectrometers using NaI(Tl) detectors.
		This feature-rich, GUI-oriented software was specifically developed to perform whole spectrum gamma-ray data processing.
		Geosoft licenses Praga3 Radiometrics as a montaj plus™ extension to Oasis montaj.
	www.geosoft.com /pinfo/partners/praga3radiometrics.asp (242 words)

	421 schedule (Site not responding. Last check: 2007-11-07)
		Grp-a: radiometrics (L.A) Grp-b: literature research project (R) Grp-a: radiometrics
		There is some cross over between well logging and surface or airborne radiometric methods.
		Focus is on using magnetic maps for geologic purposes, and other applications.
	www.eos.ubc.ca /courses/eosc451/sched.htm (217 words)

	Radiometrics Midwest Corp. (Compliance Engineering Reference Guide)
		At Radiometrics we understand that any electronic product can become the source or the victim of electromagnetic Interference.
		Radiometrics EMC compliance engineering center ensures passing results for all of your EMC compliance needs.
		Testing at this American Association for Laboratory Accreditation (A2LA) accredited laboratory is performed by EMI engineers certified by the National Association of Radio and Telecommunications Engineers (NARTE).
	www.ce-mag.com /suppliers/co/11/1119.html (302 words)

	Radiometrics Midwest Corp. (Directory of Medical Product Manufacturing Consultants)
		To search for manufacturers of finished medical devices, visit www.MDRWeb.com.
		Radiometrics Midwest, an A2LA accredited EMC compliance center, was established to help developers of medical electronic equipment comply with FDA and international requirements.
		The center is staffed with NARTE-certified EMI engineers and equipped with state-of-the-art technology.
	www.devicelink.com /consult/r/r003.html?bottom (138 words)

	Mcphar Geosurveys Ltd (Site not responding. Last check: 2007-11-07)
		Helicopter-borne frequency domain EM/MAG surveys, with or without radiometrics
		Fixed-wing magnetometer or gradiometer surveys, with or without radiometrics
		All of the above systems are augmented by a colour digital imaging system.
	www.mgssurveys.com /about.asp?sm=2 (642 words)

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