Zobrazeno 1 - 10
of 49
pro vyhledávání: '"S.E. Hjelt"'
Publikováno v:
Geophysical Journal International. 158:827-848
3-D density model of the crust of southern and central Finland obtained from joint interpretation of the SVEKALAPKO crustal P-wave velocity models and gravity data
Publikováno v:
Geophysical Prospecting. 50:425-440
This paper presents a computational method for the interpretation of electromagnetic (EM) profile data in the frequency domain using a thin plate model within a two-layer earth. The modelling method is based on an integral equation formulation, where
Autor:
S.E. Hjelt, Markku Pirttijärvi
Publikováno v:
Inverse Problems. 16:1209-1223
A thin conducting plate has proven to be a versatile model in describing various relevant geologic features in crystalline bedrock. During the last few years we have developed several inversion codes for some commonly used electromagnetic (EM) measur
Publikováno v:
Journal of Applied Geophysics. 38:181-194
A thin conductive plate in free space is one of the most commonly employed models in the interpretation of transient electromagnetic (TEM) profile data. Despite the fact that such a model ignores the influence of the currents induced in the host medi
Autor:
T. Korja, S.E. Hjelt
Publikováno v:
Physics of the Earth and Planetary Interiors. 81:107-138
Electromagnetic (EM) investigations of the 1980s in the Fennoscandian (Baltic) Shield produced an unique and unified EM data set. Studies include regional investigations by the magnetovariational (MV) method with large lateral sampling distance, inve
Autor:
T. Korja, S.E. Hjelt
Publikováno v:
Physics of the Earth and Planetary Interiors. 79:137-177
Information on electrical conductivity of the subsurface at a crustal scale is inferred mainly from magnetotelluric (MT) and magnetometer data. The latter include both magnetometer array studies (MV) and geomagnetic depth soundings (GDS). Locally, co
Autor:
S.E. Hjelt
Publikováno v:
Tectonophysics. 189:249-260
Large resistive regions (ideally having a horizontal size of about 200 km) are needed to study reliably the conductivity distribution of the lower crust of the Baltic (Scandinavian) Shield by deep electromagnetic (EM) methods. The overburden of the s
Autor:
S. Sandoval, S.E. Hjelt, Eduard Kissling, Roland Roberts, Annakaisa Korja, Pierre Vacher, Zaher Hossein Shomali, Pekka Heikkinen, Marek Grad, M V Nevsky, U. Achauer, Tero Raita, Véronique Farra, J. Tiikkainen, O. Y. Riznichenko, A. Alinaghi, Guenter Bock, N. I. Pavlenkova, A. Guterch, I. Sanina, N. V. Sharov, Y. G. Yurov, Helle Pedersen, Hanneke Paulssen, J. Ansorge, Tellervo Hyvönen, W. Friederich, E. Wielandt, K. Wilegalla, Elena Kozlovskaya, Marianne Bruneton, K. Komminaho, Nicholas Arndt, Jaroslava Plomerová, J. Yliniemi, J.-P. Ikonen
Publikováno v:
Journal of Geophysical Research: Solid Earth. 109
Complex lithospheric structure under the central Baltic Shield from surface wave tomography
Autor:
Bruneton, M., H.A., Pedersen, Farra, V., N.T., Arndt, Vacher, P., Achauer, U., Alinaghi, A., Ansorge, J., Bock, G., Friederich, W., Grad, M., Guterch, A., Heikkinen, P., S.E., Hjelt, T.L., Hyvönen, J.P., Ikonen, Kissling, E., Korja, A., Kozlovskaya, E., M.V., Nevsky, Paulssen, H., N.I., Pavlenkova, Plomerovà, J., Raita, T., O.Y., Riznichenko, R.G., Roberts, Sandoval, S., I.A., Sanina, N.V., Sharov, Z.H., Shomali, Tiikkainen, J., Wielandt, E., Wilegalla, K., Yliniemi, J., Y.G., Yurov
Publikováno v:
Journal of Geophysical Research
Journal of Geophysical Research, American Geophysical Union, 2004, 109 (B10), pp.B10303. ⟨10.1029/2003JB002947⟩
Journal of Geophysical Research, American Geophysical Union, 2004, 109 (B10), pp.B10303. ⟨10.1029/2003JB002947⟩
International audience
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::bc3dc67d31689b2069c9b681b9c3dca7
https://hal.archives-ouvertes.fr/hal-00118054/file/2003JB002947.pdf
https://hal.archives-ouvertes.fr/hal-00118054/file/2003JB002947.pdf
Publikováno v:
Physics of the Earth and Planetary Interiors. 32:301-305
Three groups of electromagnetic data have been considered in order to construct a preliminary geoelectrical depth model of the old basement of the Baltic shield: (i) audiomagnetotelluric data in the period range 1 3700 − 1 8 s; (ii) magnetotelluric