Abnormal Enhancements of HF Noise Intensity at Syowa Station, Antarctica
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...
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The 550-year records of 6180 and dust concentrations from Siple Station, Antarctica suggest warmer and less dusty atmospheric conditions from 1600 to 1830 A.D. which encompasses much of the northern hemisphere Little Ice Age (LIA).· Dust and 6180 data from South Pole Station indicate that the opposite conditions (e.g. cooler and more dusty) were prevalent there during the LIA. Meteorological da...
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ژورنال
عنوان ژورنال: Journal of geomagnetism and geoelectricity
سال: 1969
ISSN: 0022-1392
DOI: 10.5636/jgg.21.697