1976
DOI: 10.3133/ofr76715
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Diurnal effects on the helium concentration in soil-gas and near-surface atmosphere

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Cited by 9 publications
(2 citation statements)
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“…Martin and Bergquist (1977) observed a diurnal variation of helium in soil gas at a location in Wyoming of at least 0.04 ppm with a maximum of 0.2 ppm. Reimer et al (1976) have found no diurnal variation of helium in near-surface soil gas. They state that only in rare circumstances would an actual variation of more than 0.02 ppm occur.…”
Section: Helium·mentioning
confidence: 80%
“…Martin and Bergquist (1977) observed a diurnal variation of helium in soil gas at a location in Wyoming of at least 0.04 ppm with a maximum of 0.2 ppm. Reimer et al (1976) have found no diurnal variation of helium in near-surface soil gas. They state that only in rare circumstances would an actual variation of more than 0.02 ppm occur.…”
Section: Helium·mentioning
confidence: 80%
“…EMANOMETRIA 137-176 [92][93][94][95][96][97][98][99][100][101][102][103][104][105][106][107][108][109][110][111] Enunciado: (p. [139][140][141][142] Esta conclusión puede considerarse como una de las aportaciones de esta Tesis, toda vez que se ha demostrado matemáticamente la existencia de un efecto de "memoria" en el contaje de partículas a en el Emanómetro. Una vez constatado este hecho se formuló una nueva expresión que corrige el efecto del "blanco" (p. 70) sobre las lecturas de muestra, y que responde a la siguiente expresión: donde: * M'3 es el valor a considerar, esto es, aquél que resulta de la corrección del "blanco JI.…”
Section: Paginas Donde Se Explican Las Conclusiones Parcialesunclassified