Geologica acta

Geologica acta 8 records found  Search took 0.01 seconds. 
1.
3 p, 136.3 KB Electromagnetic Induction in the Earth / Marcuello, Alex (Universitat de Barcelona. Departament de Geodinàmica i Geofísica) ; Martí, Anna (Universitat de Barcelona. Departament de Geodinàmica i Geofísica)
2010 - 10.1344/105.000001511
Geologica acta, Vol. 8, Núm. 1 (Març 2010) , p. 1-3  
2.
9 p, 288.0 KB Monitoring of tidal variations of apparent resistivity / Saraev, A.K. (St. Petersburg State University) ; Pertel, M.I. (St. Petersburg State University) ; Malkin, Z.M. (Pulkovo Observatory)
Possibilities of using tidal phenomena for the development of a monitoring technique of apparent resistivity (?a) variation registration, and the analysis of previous studies, are considered in this paper. [...]
2010 - 10.1344/105.000001512
Geologica acta, Vol. 8, Núm. 1 (Març 2010) , p. 5-13  
3.
16 p, 997.3 KB 2-D Niblett-Bostick magnetotelluric inversion / Rodríguez, J. (CiCese/Ciencias de la Tierra (Ensenada, Mèxic)) ; Esparza, F. J. (CiCese/Ciencias de la Tierra (Ensenada, Mèxic)) ; Gómez-Treviño, E. (CiCese/Ciencias de la Tierra (Ensenada, Mèxic))
A simple and robust imaging technique for two-dimensional magnetotelluric interpretations has been developed following the well known Niblett-Bostick transformation for one-dimensional profiles. The algorithm processes series and parallel magnetotelluric impedances and their analytical influence functions using a regularized Hopfield artificial neural network. [...]
2010 - 10.1344/105.000001513
Geologica acta, Vol. 8, Núm. 1 (Març 2010) , p. 15-31  
4.
20 p, 3.6 MB On processing of Controlled Source Electromagnetic (CSEM) Data / Pankratov, Oleg V. (Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of Russian Academy of Science) ; Geraskin, Alexey I. (Nord-West Limited)
In this paper, we present a fast and robust scheme of controlled source electromagnetic data processing. We specify in detail various types of noise that affect measurements and show how these noise components can be suppressed. [...]
2010 - 10.1344/105.000001514
Geologica acta, Vol. 8, Núm. 1 (Març 2010) , p. 31-49  
5.
16 p, 2.1 MB Audiomagnetotelluric investigation of seawater intrusion using 2-D inversion of invariant impedances / Luján, Violeta (Centro de Investigación Científica y de Educación Superior de Ensenada, (CICESE). División de Ciencias de la Tierra) ; Romo, José Manuel (Centro de Investigación Científica y de Educación Superior de Ensenada, (CICESE). División de Ciencias de la Tierra)
An audio-magnetotelluric survey was conducted to estimate the extension of the seawater intrusion in a coastal aquifer, in Ensenada, Baja California, México. The survey consisted of 134 closely spaced sites along three profiles 5 to 6 km long. [...]
2010 - 10.1344/105.000001515
Geologica acta, Vol. 8, Núm. 1 (Març 2010) , p. 51-66  
6.
16 p, 1005.5 KB Conductive structures around Las Cañadas caldera, Tenerife (Canary Islands, Spain) : a structural control / Coppo, N. (University of Neuchâtel (Suïssa). Geomagnetism group) ; Schnegg, P.A. (University of Neuchâtel (Suïssa). Geomagnetism group) ; Falco, P. (University of Neuchâtel (Suïssa). Geomagnetism group) ; Costa, R. (University of Neuchâtel (Suïssa). Geomagnetism group)
External eastern areas of the Las Cañadas caldera (LCC) of Tenerife (Canary Islands, Spain) have been investigated using the audiomagnetotelluric (AMT) method with the aim to characterize the physical rock properties at shallow depth and the thickness of a first resistive layer. [...]
2010 - 10.1344/105.000001516
Geologica acta, Vol. 8, Núm. 1 (Març 2010) , p. 67-82  
7.
16 p, 763.1 KB Deep crustal electromagnetic structure of Bhuj earthquake region (India) and its implications / Naganjaneyulu, K. (National Geophysical Research Institute, Council of Scientific and Industrial research (CSIR)) ; Ledo, J. J. (Universitat de Barcelona. Departament de Geodinàmica i Geofísica) ; Queralt, P. (Universitat de Barcelona. Departament de Geodinàmica i Geofísica)
The existence of fluids and partial melt in the lower crust of the seismically active Kutch rift basin (on the western continental margin of India) owing to underplating has been proposed in previous geological and geophysical studies. [...]
2010 - 10.1344/105.000001517
Geologica acta, Vol. 8, Núm. 1 (Març 2010) , p. 83-97  
8.
12 p, 979.6 KB The active fault belts in eastern Tibet margin inferred using magnetotellurics / Zhao, G. (Institute of Geology, China Earthquake Administration) ; Wang, L. (Institute of Geology, China Earthquake Administration) ; Chen, X. (Institute of Geology, China Earthquake Administration) ; Tang, J. (Institute of Geology, China Earthquake Administration) ; Wan, Z. (Institute of Geology, China Earthquake Administration) ; Zhan, Y. (Institute of Geology, China Earthquake Administration) ; Xiao, Q. (Institute of Geology, China Earthquake Administration) ; Cai, J. (Institute of Geology, China Earthquake Administration) ; Zhang, J. (Earthquake Administration of Shandong Province) ; Wang, J. (Institute of Geology, China Earthquake Administration)
A magnetotelluric (MT) sounding has been carried out in the eastern margin of the Tibetan plateau. The survey line is about 145 km long, trending in NEE direction and crossing the Daliangshan block in the eastern edge of the Tibetan plateau. [...]
2010 - 10.1344/105.000001518
Geologica acta, Vol. 8, Núm. 1 (Març 2010) , p. 99-110  

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