Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Hanna Leväniemi"'
Autor:
Pietari Skyttä, Markku Väisänen, Hanna Leväniemi, Jaakko Kara, Markku Tiainen, Yann Lahaye, Tuomas Leskelä
Publikováno v:
Precambrian Research. 364:106364
We characterise the geochemistry, zircon Lu-Hf composition, age and the structure of the Uunimaki gabbro (UGB) in south-western Finland to improve the understanding of i) the early Svecofennian (1.92–1.89 Ga) crustal evolution of the central Fennos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::374743e95fb6b0547d1f279f6a2faf24
https://doi.org/10.1016/j.precamres.2021.106364
https://doi.org/10.1016/j.precamres.2021.106364
Autor:
Pentti Hölttä, Raimo Lahtinen, Hanna Leväniemi, Mohammad Sayab, J. Köykkä, T. Niiranen, T. Karinen
Publikováno v:
Precambrian Research. 359:106193
The geodynamic system of Earth is controlled by the horizontal motion of fragmented tectonic plates due to complex interaction between the mantle and the crust. Land and marine paleomagnetic signatures, along with extensive petrochronological and str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c7e6407491a3b59d8e5172ca3f12c17
https://doi.org/10.1016/j.precamres.2021.106193
https://doi.org/10.1016/j.precamres.2021.106193
Publikováno v:
Journal of African Earth Sciences. 128:72-83
This study investigated gold prospectivity in the Paleoproterozoic Hame Belt, located in southwestern Finland. The Hame Belt comprises calc-alkaline and tholeitic volcanic rocks, migmatites, granitoids, and mafic to ultramafic intrusions. Mineral exp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3916c1242385c41c13479a92c70ed3d8
https://doi.org/10.1016/j.jafrearsci.2016.10.010
https://doi.org/10.1016/j.jafrearsci.2016.10.010
Autor:
David Beamish, Hanna Leväniemi
Publikováno v:
Near Surface Geophysics. 8:103-115
This study considers a specific issue, often termed the canopy effect that relates to our ability to provide accurate conductivity models from airborne electromagnetic (AEM) data. The central issue is one of the correct determination of sensor height
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55b0a6e041bc7453c861d4bf17ba2180
https://doi.org/10.3997/1873-0604.2009054
https://doi.org/10.3997/1873-0604.2009054
Autor:
Efthimios Tartaras, H. Hautaniemi, M. Lahti, M. Kurimo, J. Vironmaki, Robert J. Cuss, David Beamish, Hanna Leväniemi, Ilkka Suppala
Publikováno v:
Journal of Applied Geophysics. 67:219-233
This paper describes the airborne electromagnetic (AEM) system operated by the Joint Airborne geoscience Capability (JAC), a partnership between the Finnish and British Geological Surveys. The system is a component of a 3-in-1, fixed-wing facility ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be06a1611194626c9b1176a5b6a875d5
https://doi.org/10.1016/j.jappgeo.2007.10.001
https://doi.org/10.1016/j.jappgeo.2007.10.001
Publikováno v:
Scopus-Elsevier
Geological Survey of Finland (GTK) and British Geological Survey (BGS) have jointly (JAC) constructed a new, 4-frequency EM unit installed in a fixed-wing aircraft. The system follows the technique of the previous dual frequency unit of GTK. The freq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d8dbd2c2d99ecb161f7319a769f69b5
https://doi.org/10.3997/2214-4609.201402624
https://doi.org/10.3997/2214-4609.201402624
Autor:
Hanna Leväniemi, David Beamish
Publikováno v:
Scopus-Elsevier
This paper describes an airborne geophysical survey of Northern Ireland that is being conducted over a two year period. Measurements from a fixedwing aircraft operating at 56 m include magnetic (gradiometer), radiometric and frequencydomain elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2609596ff550218fcefd062a04a83ff1
https://doi.org/10.3997/2214-4609.201402628
https://doi.org/10.3997/2214-4609.201402628
Publikováno v:
Scopus-Elsevier
The Tellus airborne geophysical survey of Northern Ireland was conducted over a two year period. Measurements from a fixed-wing aircraft operating at 56 m include magnetic (gradiometer), radiometric and frequency-domain electromagnetic. The survey co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3602f73ba7d8bbce551fe236fcab67d8
http://www.scopus.com/inward/record.url?eid=2-s2.0-55549126816&partnerID=MN8TOARS
http://www.scopus.com/inward/record.url?eid=2-s2.0-55549126816&partnerID=MN8TOARS
Autor:
Selen Raiskila, Hanna Leväniemi, Hannu Ruotsalainen, Marja Johanna Salminen, Lauri J. Pesonen
Publikováno v:
University of Helsinki
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::66a2c1b6e0cf54ac198bcfbfad603c55
https://researchportal.helsinki.fi/en/publications/691d2af2-fda7-492f-b810-d236547b6152
https://researchportal.helsinki.fi/en/publications/691d2af2-fda7-492f-b810-d236547b6152