Results 21 to 30 of about 2,486,308 (363)

Magnetic storm and term‐day observations at the Prague observatory Clementinum in the mid‐19th century

open access: yesGeoscience Data Journal, 2023
Magnetic observations at the Clementinum Observatory were started in July 1839 and data up to 1917 were published in yearbooks. In addition to regular daily observations with a typical 2‐hr time step, two categories of data with a higher cadence were ...
Pavel Hejda   +2 more
doaj   +1 more source

Measurement experiences with FluxSet digital D/I station [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2017
Geomagnetic observatories use classical theodolites equipped with single-axis flux-gate magnetometers known as declination–inclination magnetometers (DIM) to determine absolute values of declination and inclination angles.
L. Hegymegi   +3 more
doaj   +1 more source

Differences in geographical coordinates of minefields in Colombia according to their acquisition method

open access: yesLogos Ciencia & Tecnología, 2023
The scourge of explosive devices such as landmines, improvised explosive devices and unex-ploded ordnance, a product of armed conflicts in several countries around the world, has set a great precedent in the violation of fundamental human rights.
Luis Alberto Herrera Martínez   +1 more
doaj   +1 more source

Effects of neutral wind on the electron temperature at a height of 600 km in the low latitude region [PDF]

open access: yesAnnales Geophysicae, 1996
Electron temperature observed by the Hinotori satellite with the low inclination at the height of ~600 km was studied in terms of local time, season, latitude, magnetic declination and solar flux intensity during a 16-month period from 1981 to 1982 ...
S. Watanabe, K.-I. Oyama
doaj   +1 more source

Stochastic modelling of regional archaeomagnetic series [PDF]

open access: yes, 2014
SUMMARY We report a new method to infer continuous time series of the declination, inclination and intensity of the magnetic field from archeomagnetic data.
Bouligand, C.   +3 more
core   +5 more sources

A possible effect of atmospheric circulation in the daily variation of the earth's magnetic field [PDF]

open access: yes, 1963
The daily variation of the horizontal intensity of the earth's magnetic field at Honolulu exhibits seasonal features that are not related in a simple way to solar declination.
Wulf, Oliver Reynolds
core   +1 more source

Old magnetic declinations [PDF]

open access: yesTerrestrial Magnetism, 1896
On account of the renewed interest being paid to old magnetic observations, I should like to inform you that I am continuing my researches, the results of which I published in my paper, “De Isogonen in de XVIde en XVIIde Eeuw, Utrecht, 1893.”The large number of old ship journals, in the government archives at The Hague, furnished me with a thousand new
openaire   +2 more sources

Optimization of magnetic anomaly detection with single-axis sensor for pig locating in low latitude areas

open access: yesPetroleum, 2019
When a pig mounted with permanent magnets gets stuck in the pipeline, it can be located by detecting the magnetic anomalies on the ground using a single-axis magnetic sensor.
Wei Xu   +4 more
doaj   +1 more source

Ground-based absolute magnetic survey on the backbone network of points of the secular passage in Ukraine for the era of 2005

open access: yesГеофизический журнал, 2010
The results of the geomagnetic field components on renewed Ukrainian repeat stations (RS) network are considered. The methods of absolute geomagnetic and astro-geodetic measurements are described, as well as methods of geomagnetic field reduction to ...
V. Yu. Maksimchuk   +5 more
doaj   +1 more source

Historical evolution of the geomagnetic declination at the Royal Observatory of Madrid [PDF]

open access: yesHistory of Geo- and Space Sciences
The agonic line, which represents geomagnetic declinations of 0°, recently crossed the Royal Observatory of Madrid (ROM) in December 2021, causing a shift in declination values from west to east.
J. M. Tordesillas   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy