Long-period tidal factors at Antarctica Syowa Station determined from 10 years of superconducting gravimeter data
نویسندگان
چکیده
منابع مشابه
Re-Evaluation of Geomagnetic Field Observation Data at Syowa Station, Antarctica
The Japanese Antarctic Research Expedition has conducted geomagnetic observations at Syowa Station, Antarctica, since 1966. Geomagnetic variation data measured with a fluxgate magnetometer are not absolute but are relative to a baseline and show drift. To enhance the importance of the geomagnetic data at Syowa station, therefore, it is necessary to correct the continuous variation data by using...
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We briefly overview the radar observations that have been made for 30 years at Syowa Station, Antarctica for studying small-scale electron-density irregularities in the southern high-latitude Eand F-region ionosphere. Some observational results (i.e., long-term variations of radio aurora, Doppler spectra with narrow spectral widths and low Doppler velocities, and simultaneous observations of ra...
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Measurement of black carbon (BC) was carried out at Syowa station Antarctica (69 • S, 39 • E) from February 2004 until January 2007. The BC concentration at Syowa ranged from below detection to 176 ng m −3 during the measurements. Higher BC concentrations were observed mostly under strong wind (blizzard) conditions due to the approach 5 of a cyclone and blocking event. The BC-rich air masses tr...
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Analyses of stratospheric ozone data determined from Dobson–Umkehr measurements since 1977 at the Syowa (69.0 S, 39.6 E), Antarctica, station show a significant decrease in ozone at altitudes higher than that of the 4 hPa pressure level during the 1980s and 1990s. Ozone values over Syowa have remained low since 2001. The time series of upper stratospheric ozone from the homogenized NOAA SBUV (S...
متن کاملFree core nutation resonance parameters from VLBI and superconducting gravimeter data
Context. The free core nutation (FCN) can be observed by its associated resonance effects on the forced nutations of the Earth’s figure axis, as observed by very long baseline interferometry (VLBI), or on the diurnal tidal waves, retrieved from the time-varying surface gravity recorded by superconducting gravimeters (SG). Aims. In this paper, we study the sensitivity of both techniques to the F...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2005
ISSN: 0148-0227
DOI: 10.1029/2004jb003551