Zobrazeno 1 - 10
of 15
pro vyhledávání: '"J. Bradley Nelson"'
Publikováno v:
Tectonophysics. 691:98-109
A compilation of several aeromagnetic surveys across North Greenland and the Fram Strait area is presented. Across North Greenland, the data are related to the known onshore geology. The correlation between the geological structure and the large-scal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14395a806af57fc94ae4bfc3cbe2f83e
https://doi.org/10.1016/j.tecto.2015.12.002
https://doi.org/10.1016/j.tecto.2015.12.002
Autor:
J. Bradley Nelson, Bhashyam Balaji
Publikováno v:
SPIE Proceedings.
The magnetic signal from a ferromagnetic object at a large distance can be modelled as that of a magnetic dipole. In many applications, the inverse problem of estimating the position, velocity and magnetic moment vector is of interest. Given the rela
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abd628a5e95bf1f4a651ce781717287b
https://doi.org/10.1117/12.2050337
https://doi.org/10.1117/12.2050337
Autor:
J. Bradley Nelson
Publikováno v:
GEOPHYSICS. 59:1166-1170
Temporal changes in the earth’s magnetic field occur in the frequency band of millihertz to a few Hertz. Amplitudes of variations above 0.1 Hz are usually much smaller than 1 nT, changes of 50–100 nT over periods of a few hours are not uncommon.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b77a191a0baa81ee9db6958a1342322
https://doi.org/10.1190/1.1443673
https://doi.org/10.1190/1.1443673
Autor:
J. Bradley Nelson, William E. Avera, Patrick C. Gallacher, William J. Teague, Robert T. Liang
Publikováno v:
OCEANS 2009.
Environmental noise can be a major limitation on the performance of magnetic sensor systems in continental shelf regions. Previous work has predicted the magnetic influence from internal waves and indicates that these could be important components of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa5ee437ba8c22099c48e9b72c5aa10b
https://doi.org/10.23919/oceans.2009.5422236
https://doi.org/10.23919/oceans.2009.5422236
HARRISON and SOUTHAM (1991) point out the many benefits of magnetic gradiometry including the enhancement of short-wavelength (nearby) anomalies relative to long-wavelength (far away) anomalies, and the heavy attenuation of diurnal or magnetic storm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e2685e6e67aef8c657675c7c79f0170
https://nrc-publications.canada.ca/eng/view/object/?id=48dc0cf7-efaf-4a27-a4e7-c03aef3f6a82
https://nrc-publications.canada.ca/eng/view/object/?id=48dc0cf7-efaf-4a27-a4e7-c03aef3f6a82
Autor:
J. Bradley Nelson
Publikováno v:
8th International Congress of the Brazilian Geophysical Society.
Aeromagnetic aircraft and data acquisition systems generate magnetic interference which can effect the quality of the data collected. Many people believe that traditional aircraft compensation, which models the permanent, induced, and eddy-current so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aaf85f3289d66b3f615fea0ace0cbcee
https://doi.org/10.3997/2214-4609-pdb.168.arq_1036
https://doi.org/10.3997/2214-4609-pdb.168.arq_1036
Autor:
J. Bradley Nelson, G. C. Tabisz
Publikováno v:
Physical Review A. 28:2157-2161
The intensity of the pure rotational absorption spectrum of gaseous HD is measured as a function of density for pure HD and HD-He and HD-Ar mixtures. The decrease in the absorption coefficient with increasing density is consistent with a destructive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a03e831392161d67000fd64204f1598
https://doi.org/10.1103/physreva.28.2157
https://doi.org/10.1103/physreva.28.2157
Autor:
J. Bradley Nelson
Publikováno v:
GEOPHYSICS. 53:957-966
The very low inherent noise levels of superconducting quantum interference device (SQUID) sensors have led to proposals for the use of airborne SQUID magnetic gradiometers as geophysical interpretation tools. The quantity measured by such systems wil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73f967edfd69e33e6868f30c6b20d778
https://doi.org/10.1190/1.1442532
https://doi.org/10.1190/1.1442532
Autor:
G. C. Tabisz, J. Bradley Nelson
Publikováno v:
Physical Review Letters. 48:1393-1396
The intensity of the pure rotational spectrum of gaseous HD is measured as a function of density to determine the dipole moment in the ground vibrational state. $J$-dependent values are found in the range (8.0-9.8) \ifmmode\times\else\texttimes\fi{}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4a7bae90786ec37c284e740cfcade7b
https://doi.org/10.1103/physrevlett.48.1393
https://doi.org/10.1103/physrevlett.48.1393
Autor:
J. Bradley Nelson
Publikováno v:
GEOPHYSICS. 53:1088-1095
Six techniques are presented for analyzing magnetic gradient [Formula: see text] and most require the computation of the total gradient [Formula: see text] Four of the methods are mathematically rigorous: one is based on the crossing points of the [F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19a21af262b817f109d4c145dd53815e
https://doi.org/10.1190/1.1442545
https://doi.org/10.1190/1.1442545