Spectrophotometry

Beamish, F. E.

doi:10.1016/b978-0-12-083950-6.50008-9

Cited by 8 publications

(16 citation statements)

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“…This approach has been adopted by and they have found that from the complex demodulates, of only one magnetic storm, they could estimate the A(f)'s and B(J)'s as accurately as those determined by a large number of events in the conventional methods. Beamish (1977) has also used this technique and has found the method useful.…”

Section: Analyses Of Datamentioning

confidence: 95%

“…This method has been used in locating conductors in many of the recent studies e.g. de Beer et al (1976), Beamish (1977) and Jankowski et al (1977a). As a word of caution, it is worth pointing out that while using the horizontal anomaly for determination of depth, it should be borne in mind that the field has two components and for reliable results both of these components should be considered.…”

Section: Analyses Of Datamentioning

confidence: 98%

“…Anomalies near a curved conductor will be strongly dependent on polarization and the HEA technique will be of special significance in such cases. The method has been used with success by Hutton et al (1977), Beamish (1977), and Rooney and Hutton (1977).…”

Section: Analyses Of Datamentioning

confidence: 99%

“…They are, the Rio Grande rift (Schmucker, 1964), the Wasatch fault belt and the Southern Rocky Mountains (Porath, 1971;Porath and Gough, 1971), the East African rift (Banks and Ottey, 1974), the Rhine Graben (Winter, 1973), Western Canada (Caner, 1971), Hawaii (Larsen, 1975), Iceland (Hermance and Grillot, 1970) and Yellowstone (Leary and Phinney, 1974). Some of the more recent studies discussing anomalous zones are: Kenya (Beamish, 1977;Rooney and Hutton, 1977), Carpathians (Rokityanski et al, 1975;Jankowsky et al, 1977 a and b), Scotland , Southern Africa (de Beer et al, 1975;de Beer et al 1976), Bermuda (Vanyan et al, 1978); Northern Pyrenees , northeast of Quebec city (Honkura et al, 1977), Southern half of Hokkaido, Japan (Nishida, 1976); and peninsular India (Rajaram et al, 1978). These studies have identified many new areas having highly conductive bodies in the lower crust or upper mantle.…”

Section: Introductionmentioning

confidence: 95%

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Geomagnetic sounding of conductivity anomalies in the lower crust and uppermost mantle

Singh

1980

Geophysical Surveys

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Abstract. Knowledge of the structure of the lower crust and uppermost mantle is of special importance in understanding plate tectonics. Electrical conductivity of this region has been measured recently in various parts of the world. Transfer functions are still the most widely used quantity in data analysis and model fitting. Anomalies in the horizontal magnetic components in combination with anomalies in the vertical component have been found very useful in locating conductivity contrasts. With these, when the-cause of the anomaly is a concentrated line current, both the position of the line current and its depth can be directly located. The method of hypothetical event analysis is another new technique and this is highly suited for areas having complex subsurface geology or areas under non-uniform source fields or both. The anomaly is more suitable for modelling geophysical structures when it is separated into regional and local components. Model calculations still are not very satisfactory and the importance of one dimensional calculations must be emphasized for they give direct information on the variation of conductivity with depth, which is the purpose of GDS. We need more results, especially from tectonically active areas, before the underlying physical processes can be completely understood.

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Section: Analyses Of Datamentioning

confidence: 95%

Section: Analyses Of Datamentioning

confidence: 98%

Section: Analyses Of Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

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Geomagnetic sounding of conductivity anomalies in the lower crust and uppermost mantle

Singh

1980

Geophysical Surveys

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“…The gold content was determined by measuring the absorbance of gold solutions at =400 nm [24]. The solutions were prepared dissolving the catalysts in HCl-HNO 3 (3:1 by volume), then adding a solution of tin(II) chloride in hydrochloric acid.…”

Section: Samples Characterizationmentioning

confidence: 99%

Gold supported on iron oxy-hydroxides: a versatile tool for the synthesis of fine chemicals

2006

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Polarographic analysis of the reduction waves of Pt(II)-SATSC complex

Palaniappan

Paul

1989

Proc. Indian Acad. Sci. (Chem. Sci.)

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A polarographic study of the Pt(II)-salicylaldehyde thiosemicarbazone complex in sodium perchlorate as supporting electrolyte is described. In addition to the reduction wave of the complex, a catalytic hydrogen wave is also recorded. The characteristics of this catalytic hydrogen wave are studied under different experimental conditions such as varying acid/complex/supporting electrolyte/surfactant concentrations and also with mercury droptime. Based on these, a probable mechanism for the electrode process has been postulated.

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Spectrophotometry

Cited by 8 publications

References 0 publications

Geomagnetic sounding of conductivity anomalies in the lower crust and uppermost mantle

Geomagnetic sounding of conductivity anomalies in the lower crust and uppermost mantle

Gold supported on iron oxy-hydroxides: a versatile tool for the synthesis of fine chemicals

Polarographic analysis of the reduction waves of Pt(II)-SATSC complex

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