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Topic: Telluric current


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In the News (Thu 31 Dec 09)

  
  Telluric current - Wikipedia, the free encyclopedia
Telluric currents are phenomena observed in the Earth's crust and mantle.
The currents are induced by changes in the outer part of the Earth's magnetic field, which are usually caused by interactions between the solar wind and the ionosphere.
Telluric currents flow in the surface layers of the earth.
en.wikipedia.org /wiki/Telluric_current   (1064 words)

  
 Telluric current: Facts and details from Encyclopedia Topic   (Site not responding. Last check: 2007-10-21)
The adjective telluric is derived from the latin word for earth, "terra", and is used in terms related to the earth such as:...
Telluric currents are induced by changes in Earth's magnetic field magnetic field quick summary:
The skin effect is the tendency of an alternating electric current to distribute itself within a conductor so that the current density near the surface of the conductor...
www.absoluteastronomy.com /encyclopedia/t/te/telluric_current.htm   (1078 words)

  
 [No title]   (Site not responding. Last check: 2007-10-21)
Telluric electric currents encircling the Earth are regarded as being useful in prospecting for oil and many minerals.
In brief, the presence of oil causes alterations in the deep telluric currents which are carried inductively to the surface and affect the resonant sensors.
It is predicted that the presence of oil, due to its lower electrical conductivity, distorts the electric field of the belt and causes resonant inductive effects in the surrounding rocks extending to the surface.
www.soteria.com /petro/telluric.htm   (2161 words)

  
 Telluric - Wikipedia, the free encyclopedia
Telluric planet, an Earth-like planet primarily composed of silicate rocks
Telluric current, a natural electrical current in the Earth's crust
Telluric contamination, contamination of astronomical spectra by the Earth's atmosphere
en.wikipedia.org /wiki/Telluric   (130 words)

  
 Sources of Noise   (Site not responding. Last check: 2007-10-21)
A simple method to avoid the influence of these contact potentials is to periodically reverse the current flow in the current electrodes or use a slowly varying, a few cycles per second, AC current.
By periodically reversing the current from the current electrodes, or by employing a slowly varying AC current, the affects of telluric currents on the measured voltage can be cancelled.
Current Induction in Measurement Cables - Current flowing through the cables connecting the current source to the current electrodes can produce an and induced current in the cables connecting the voltmeter to the voltage electrodes, thereby generating a spurious voltage reading.
gretchen.geo.rpi.edu /roecker/AppGeo96/lectures/res/noise.html   (639 words)

  
 [No title]   (Site not responding. Last check: 2007-10-21)
Measurements were made to assist the detection of the telluric current that circulates deep in the earth.
Large peak current positive CGs (LPC+CGs) are concentrated in the High Plains and upper Midwest, the region in which a large majority of optical sprite and elves observations have been obtained.
In addition to stroke current parameters (crest value, steepness, duration), information on flash density, polarity, number of strokes per flash (multiplicity), time interval between individual strokes in a flash and between flashes is of importance, particularly for the protection of electric power systems.
nova.stanford.edu /~vlf/bibliography/nldn.bib   (8946 words)

  
 Electrical Methods
Using electrical methods, one may measure potentials, currents, and electromagnetic fields that occur naturally or are introduced artificially in the ground.
Variations in the resistivity of earth materials, either vertically or laterally, produce variations in the relations between the applied current and the potential distribution as measured on the surface, and thereby reveal something about the composition, extent, and physical properties of the subsurface materials.
Since the conduction of current in soil and rock is through the electrolyte contained in the pores, resistivity is governed largely by the porosity, or void ratio, of the material and the geometry of the pores.
www.freewebtown.com /geophysics2/elec-method.html   (1667 words)

  
 stray current corrosion types   (Site not responding. Last check: 2007-10-21)
In general, direct stray current corrosion is considered the most severe form of these problems.
The flow of direct stray current is not necessarily steady with time, in terms of magnitude and current path(s).
Telluric effects, a "natural" form of dynamic stray currents induced by transient geomagnetic activity (disturbances in the earth's magnetic field).
www.corrosion-club.com /sttypes.htm   (145 words)

  
 1.1 Extra-solar planets
The transit of a telluric planet induces a photometric variation of a low amplitude which has to be distinguished from other signals as for instance the ones caused by the star activity or by noises of varius origins.
Nevertheless the formation of such objects is not removed by the current models because the efficiency of the accretion mechanisms depends on the density or the mass of the protoplanetary discs.
Therefore, according to the current planetary models which tell that the planetesimal accretion processes have come before gas capture (appearance of a rocky core whose mass is around 15 times the earth’s one, followed by a gas gravitationnal capture), we can conclude that the telluric planets formation should occur at least as oftenly.
corot.oamp.fr /planets.html   (6304 words)

  
 Emerald & Amethyst Awakening   (Site not responding. Last check: 2007-10-21)
The life-force currents associated with dimensions 1-9 are collectively called the Kundalini currents and these currents contain three densities which are in turn associated with three shields (mathematical templates for the densities) and three Hova bodies.
The first Kundalini Current, the Telluric current, corresponding to the Nada Hova Body, is active within the human form at birth, enabling 3-dimensional awareness or consciousness to embody within the Human organism.
This current that is also called the "Rainbow Bridge" or the "Rainbow Serpent" sets in motion simultaneous activation of the 12 base tones and 12 over tones within the Fire Codes between the 12 DNA strands, allowing fusion between DNA Strands to complete on 12 dimensions of frequency.
www.azuritepress.com /emerald_amethyst_awakening.htm   (3823 words)

  
 Glossary - T
As applied to well logging, a component of telluric current along the borehole may produce an undesired variable voltage between measure and ground electrodes which is superimposed on the SP.
Telluric currents may create problems on resistivity measurements with large spacings and at very low frequencies (e.g., the ultra-long-spaced electrical log).
A microlaterolog, in which the bucking electrodes are concentric about the current electrode so that the current flow is concentrated in a tube shape which gradually flares out.
www.spwla.org /library_info/glossary/reference/glosst/glosst.htm   (3376 words)

  
 Landmines and Improvised Explosive Devices (IED's)   (Site not responding. Last check: 2007-10-21)
Electric currents seek the path of least resistence and since steel is much, much less resistive than sand the current will seek the route through the steel.
The size and scale of the circle generated by the gradient in the telluric currents is illustrated in Fig.
The cause of the movement was generated by the gradient in the telluric current flow through the buried can (there must be a conservation of charge).
www.home.earthlink.net /~jsjrsi/id12.html   (2246 words)

  
 Measurement Equipment of GemM Laboratory   (Site not responding. Last check: 2007-10-21)
The method of differential measuring is used for telluric current observation.
3 components of telluric current are measured, using 300m baseline between lead electrodes and 400m borehole.
The vertical current in the near-surface atmosphere is measured using the method of voltage difference at a given stable resistor, connecting the sensor with the ground.
wwwbrk.adm.yar.ru /gemm/complex_e.html   (614 words)

  
 Subterranean Electric Currents
These "telluric" currents are primarily those induced by the earth's changing magnetic field, as it is affected by the solar wind.
The present paper announces the discovery of a regional telluric current flowing in the vicinity of the San Francisco Peaks volcanic field in Arizona.
Some of the channeled earth currents are man-made, being the return paths in electrical power transmission systems.
www.science-frontiers.com /sf036/sf036p11.htm   (245 words)

  
 The Mysteries of Chartres Cathedral
An old Gaulish name, Wouivre, is given to snakes that glide, to rivers that snake through the landscape, to telluric currents that snake underground from the depths of the terrestrial strata, bringing life that fructifies Earth and Man. The name is also given to such currents as we term cosmic or magnetic.
The telluric current can only enter him by way of a vertebral column that is upright and straight.
The germinal point of the cathedral, he writes, is the head of the telluric current, where the altar once stood.
www.sacredconnection.ndo.co.uk /holyland/MysteriesofChartres.htm   (3436 words)

  
 Oilfield Glossary: Term 'telluric-current method'
An electromagnetic method in which naturally occurring, low-frequency electric currents (telluric currents), are measured at a base station and compared with values measured at other stations.
The normalized measurements of telluric current provide information about the direction of current flow and the conductance (conductivity times thickness) of sediments in the surveyed area.
Extremely low-frequency telluric currents (with periods of days or months) provide information about conductivity in the deep interior of the Earth.
www.glossary.oilfield.slb.com /Display.cfm?Term=telluric-current+method   (86 words)

  
 English 102: Week Four   (Site not responding. Last check: 2007-10-21)
These currents, called telluric currents, are generated by the continual changes in the earth's magnetic field.
Barring any environmental impact, if this current trend regarding funding for dam safety programs continues, then there appears to be no other solution but to discontinue the building of more dams on wild rivers and enact a more stringent policy of dam removal.
Currently, nearly one-fourth of all dams in the United States are more than fifty years old, and by the year 2020, that number will reach eighty-five percent.
vcs2.ccc.cccd.edu /eng100/102_WeekFour.html   (18034 words)

  
 [No title]   (Site not responding. Last check: 2007-10-21)
] Irregular fluctuations in an earth current in the earth's crust, often associated with electric field strengths as large as several volts per kilometer, and superimposed on the normal diurnal variation of the earth currents.
] A current that is influenced by the monsoon drifts of the Indian Ocean, flowing southwestward along the Somalia coast in the Northern Hemisphere winter and northeastward in the Northern Hemisphere summer.
] The tidal current associated with the decrease in the height of a tide.
www.accessscience.com /Dictionary/E/E1/DictE1.html   (2180 words)

  
 Creation Science and the Earth's Magnetic Field
It is very hard to imagine a field of magnetic rocks, or a coherent telluric current, either of which is as large as one half or one quarter of the Earth.
But Barnes is essentially forced to commit this error as a natural result of his rejection of dynamo theory, and his model of an exponentially decaying current in the Earth's core as the source of the Earth's magnetic field.
If this exponentially decaying current model were valid, then Barnes could properly appeal to Cowling's theorem, since the axially symmetric current, and the pure dipole component, together fit the limited class of conditions in which Cowling's theorem prohibits dynamo maintenance.
www.talkorigins.org /faqs/magfields.html   (8044 words)

  
 ISAAC Quality Control: telluric
The ISAAC calibration plan includes the observation of brught standard stars to be used as telluric apsorption line template (see the User Manual for details concerning the policy).
In addition for this calibration purpose the standards stars are used to derive the spectroscopic response of the instrument using the isaacp respfunc recipe.
The efficiency curves of the last eight taken telluric standard stars are shown, together with the efficiency curve of the current telluric standard star.
www.eso.org /observing/dfo/quality/ISAAC/qc/qc_IS_std.html   (391 words)

  
 [No title]   (Site not responding. Last check: 2007-10-21)
Telluric current: A natural electrical current flow of low frequency within the Earth.
The first step in processing MT data is to transform to the frequency domain using the Fourier Transform.
TE = current flow in the direction of geologic strike.
www.gp.uwo.ca /es320/mt_notes.html   (210 words)

  
 Kamchatkan EMSD - The network of the points of electrotelluric measurements   (Site not responding. Last check: 2007-10-21)
The measurement of electrotelluric (telluric current) potentials is conducted at three points SHIP, VP and TUN.
Measurement data of telluric potentials are received at the obtained at the data collection of GRTS center at the main building of KEMSD.
The final processing and visualization of current data stream is performed twice a day.
www.emsd.iks.ru /telluric-e.html   (226 words)

  
 Review of Greenwood paper   (Site not responding. Last check: 2007-10-21)
Review: This is a report on the effects of stray current from Telluric currents and from DC rail systems.
The effects of transient stray current on cathodic protection of pipelines are negligible if the average stray current is near zero.
For condition monitoring purposes on pipelines affected by stray current an accurate potential may be obtained at Pearson defects by recording the local potential for a suitable period.
www.delweg.com /library/review/revwgre.htm   (224 words)

  
 PRCI - L51909e Telluric and Ocean Current Effects on Buried Pipeline and their Cathodic Protection Systems (eBook)   (Site not responding. Last check: 2007-10-21)
Need: Historically the effects of telluric currents on pipelines have been considered a curiosity and an inconvenience when conducting cathodic protection surveys for compliance with the pipeline codes and regulations.
Result: This report describes two methods for modeling telluric currents in pipelines wherein the distributed source transmission line (DSTL) model has been used successfully to predict the magnitude of telluric currents and the associated potential variations throughout pipeline networks.
Most of the techniques that have been developed require multiple recorders to collect data from stationary electrodes, prior to or during the survey, so that a correction factor can be derived and applied to the potential measured by the moving electrode.
www.prci.com /publications/L51909e.htm   (228 words)

  
 International Association of Geomagnetism and Aeronomy Activities in Canada: 1999-2003
Boteler, D.H., Gummow, R.A. and Rix, B.C., Evaluation of Telluric Current Effects on the Maritimes and Northeast Pipeline, Proc.
An industry dataset was re-analysed and re-modelled using modern methods, and it was demonstrated that a large anomaly conjectured to exist beneath the region was, in fact, a consequence of the interaction between regional currents and a small ore body (Garcia and Jones, 2003).
The potential of the Archean and Proterozoic crust, beneath the Western Canadian Sedimentary Basin, to be a source of diamondiferous kimberlites was recognized almost immediately after the discovery of the Lac de Gras kimberlites in the Northwest Territories.
www.cgu-ugc.ca /cnc-iugg/IAGA03.htm   (6682 words)

  
 CNC/IAGA - IUGG 1999
An international study is underway to investigate the effects of telluric currents on pipelines.
Multi-point recordings are being made of the pipeline potential fluctuations caused by telluric currents in order to map the spatial characteristics of the potential variations.
An array of 10 sites is currently recording across the whole of the Slave craton using EM instruments designed for use on the continental shelf, installed on the bottoms of lakes.
www.cgu-ugc.ca /cnc-iugg/IAGA_9599.htm   (14741 words)

  
 The Earth Energy of Fr. Athanasus Kirchner
During this time period of the 1800s, the telluric notions of the alchemists came to be viewed as quite relevant and essential by many engineers and vital scientific knowledge to such notable personages as Crookes, and Lodge, who involved themselves deeply in the "psychic effects" and "spiritual effects" of telluric energies without fearof ridicule.
Once secured from the Earth, these powerful energetic currents were conducted by the precisely constructed stonework, allowed to expand and process through various large stone chambers, where the continually inter-twining currents would concentrate, shift, magnify, bifurcate, and ultimately interact with the chosen few.
All the immense energy of the Telluric Current was put through these modulations specifically for the purpose of magnifying the Consciousness Awareness, and the intellects and hearts of the chosen few.
www.rialian.com /rnboyd/earth-energy-kirchner.htm   (967 words)

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