Zobrazeno 1 - 10
of 151
pro vyhledávání: '"T. Risbo"'
Autor:
E. Hjortenberg, T. Risbo
Publikováno v:
Geophysical Journal of the Royal Astronomical Society. 42:547-554
Summary Monochromatic components of the seismic noise have been detected in the NORSAR area. The most prominent are near 2.08 Hz and 2.78 Hz. The geographical distribution and the variation with time is studied, and also the particle motion and wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::933eeaa6bfc8e8691943ed613961d5b7
https://doi.org/10.1111/j.1365-246x.1975.tb05877.x
https://doi.org/10.1111/j.1365-246x.1975.tb05877.x
Publikováno v:
Measurement Science and Technology. 17:1563-1569
Earth magnetic field mapping from planetary orbiting satellites requires a spacecraft magnetic field environment control program combined with the deployment of the magnetic sensors on a boom in order to reduce the measurement error caused by the loc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddbf909ec1908aa6b4d29d425fd8fa0c
https://doi.org/10.1088/0957-0233/17/6/038
https://doi.org/10.1088/0957-0233/17/6/038
Publikováno v:
Measurement Science and Technology. 16:590-593
The shift of the NMR spectral line frequency in a proton free precession absolute scalar magnetometer using the omni-directional toroid container for a proton-rich liquid depends on the magnetic susceptibility of the liquid and on the direction of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58b601d5f80931ac00afdfe013f17dbf
https://doi.org/10.1088/0957-0233/16/2/036
https://doi.org/10.1088/0957-0233/16/2/036
Autor:
Fritz Primdahl, José M.G. Merayo, O.V. Nielsen, T. Risbo, Ingo Richter, Jan Raagaard Petersen, Peter Brauer
Publikováno v:
Measurement Science and Technology. 14:674-688
The compact spherical coil (CSC) vector-feedback magnetometer on the Danish Orsted geomagnetic mapping satellite underwent extensive calibrations and verifications prior to integration and launch. The theory of the 'thin shell' calibration procedure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32f4e7da6a622a369fcba6604225a46a
https://doi.org/10.1088/0957-0233/14/5/319
https://doi.org/10.1088/0957-0233/14/5/319
Autor:
Lars Tøffner-Clausen, T. Risbo, O.V. Nielsen, Jean-Michel Leger, John Leif Jørgensen, José M.G. Merayo, Nils Olsen, Peter Brauer, Fritz Primdahl, Terence J. Sabaka
Publikováno v:
Technical University of Denmark Orbit
Scopus-Elsevier
Scopus-Elsevier
The vector fluxgate magnetometer of the Orsted satellite is routinely calibrated by comparing its output with measurements of the absolute magnetic intensity from the Overhauser instrument, which is the second magnetometer of the satellite. We descri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::316aecb97dde550f12297f65b6e5824c
https://doi.org/10.1186/bf03352458
https://doi.org/10.1186/bf03352458
Publikováno v:
Journal of Geodynamics. 33:21-28
On Tuesday 23 February 1999, at 10:29 UTC, SUNSAT was launched into an 857×655 km, 96.47° polar orbit on a Boeing-Delta II rocket from Vandenberg Air Force Base in California, USA. Both SUNSAT and Orsted were NASA-sponsored secondary payloads accom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bc6239258c4cda0c88482fcf208773f
https://doi.org/10.1016/s0264-3707(01)00051-5
https://doi.org/10.1016/s0264-3707(01)00051-5
Publikováno v:
Meteoritics & Planetary Science. 36:549-558
— Data on the trajectory and orbit of an extremely bright bolide (superbolide) over Greenland on 1997 December 9 are given, and circumstances of the phenomenon and its observations are described. A surveillance video camera and satellite-based reco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6e0a2b9b1306111d13656becc36b169
https://doi.org/10.1111/j.1945-5100.2001.tb01896.x
https://doi.org/10.1111/j.1945-5100.2001.tb01896.x
Autor:
John Leif Jørgensen, Gauthier Hulot, R. R. B. von Frese, Peter Stauning, Nils Olsen, T. Risbo, Eigil Friis-Christensen, Mioara Mandea, Torsten Neubert, Fritz Primdahl
Publikováno v:
Eos, Transactions American Geophysical Union. 82:81-88
Space-based, high-precision magnetometry is essential for understanding a variety of phenomena ranging from secular variation of the Earth's main field, through the signatures of crustal magnetism and the effects of plasma currents flowing externally
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6803f5731fd6b0795628b2b15b3ac1e
https://doi.org/10.1029/01eo00043
https://doi.org/10.1029/01eo00043
Autor:
T. Risbo
Publikováno v:
Journal of Geodesy. 70:383-396
The relation between D- and d-functions, spherical harmonic functions and Legendre functions is reviewed. Dmatrices and irreducible representations of the rotation group O(3) and SU(2) group are briefly reviewed. Two new recursive methods for calcula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a51992020ab1e5060ca5521f12be4ce
https://doi.org/10.1007/bf01090814
https://doi.org/10.1007/bf01090814
Publikováno v:
Primdahl, F, Merayo, J M G, Brauer, P & Risbo, T 2003, Design, calibration and testing of precise magnetometers . in Proceedings of IEEE Sensors, 2003. . vol. 1, IEEE, 2nd IEEE International Conference on Sensors, Toronto, Canada, 22/10/2003 . https://doi.org/10.1109/ICSENS.2003.1278981
Technical University of Denmark Orbit
Scopus-Elsevier
Technical University of Denmark Orbit
Scopus-Elsevier
The requirements for precise global mapping of the Earth's vector magnetic field from a LEO satellite are discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9f8116568ef92db68aaa59e7ef2c932
https://orbit.dtu.dk/en/publications/471a7f02-283c-47c4-a5b9-867f26f40fec
https://orbit.dtu.dk/en/publications/471a7f02-283c-47c4-a5b9-867f26f40fec
