GRAVITY TIDES OBSERVED AT SYOWA AND ASUKA STATIONS, ANTARCTICA
スポンサーリンク
概要
- 論文の詳細を見る
Tidal gravity observations were made at Syowa and Asuka Stations, Antarctica, by the 28th Japanese Antarctic Research Expedition (JARE-28). LaCoste & Romberg type G gravity meters were used with electrostatic feedback amplifiers. The tidal output voltage records were sampled at intervals of 30min for both stations. The data with stable drift were selected and calibrated to tidal gravity variation. The number of selected data is 2976 from April 1 to June 1,1987 for Syowa Station and is 8736 from June 2 to November 30,1987 for Asuka Station. The admittance parameters of gravity change for atmospheric pressure and temperature variations are obtained as -0.311 μgal/mbar (1 μgal/mbar=10^<-10>m^2/kg) and 0.003 μgal/℃ (1 μgal/℃=10^<-8>m/s^2℃) for Syowa Station, and -0.264μgal/mbar and 0.029μgal/℃ for Asuka Station, respectively. When we consider appropriate elastic constants of ice, the above admittance parameter of atmospheric pressure change can be explained by both the upward attraction and loading deformation of the ice sheet by air mass for an extent of 30km covering the site. δ-factors which are corrected for oceanic tidal loading effects range from 1.130 (K_1) to 1.250 (M_2) for Syowa Station, and from 1.134 (P_1) to 1.330 (K_2) for Asuka Station, respectively. For diurnal tides, there is no significant difference between the obtained δ-factors at both stations. They are consistent with the theoretical values calculated by WAHR for the 1066A earth model. For semi-diurnal tides, however, the δ-factors at both stations are 1-17% larger than the WAHR's theoretical prediction values. The δ-factors for semi-diurnal tides at Asuka Station on the ice sheet (about 1000m thick) are as a whole larger than those at Syowa Station on the bare rock of East Ongul Island in Lutzow-Holm Bay. We presume that the tidal deformation of the ice sheet may be systematically larger than the ice-free area when we interpret the obtained result, but detailed examination of the earth models including surface ice layers has to be made for accurate interpretation of the tidal gravity observation in the Antarctic region.
- 国立極地研究所の論文
著者
-
Shibuya Kazuo
National Inst. Of Polar Res. And Graduate Univ. For Advanced Studies (sokendai) 1-9-10 Kaga Itabashi
-
AKAMATSU Junpei
Disaster Prevention Research Institute, Kyoto University
-
Fukuda Yoichi
Ocean Research Institute The University Of Tokyo
-
Akamatsu Junpei
Disaster Prevention Research Institute Kyoto University
-
OGAWA Fumio
Faculty of Science, Tokai University
-
Ogawa Fumio
Faculty Of Science Tokai University
関連論文
- Combined use of InSAR and GLAS data to produce an accurate DEM of the Antarctic ice sheet: Example from the BreivikaeAsuka station area
- Fluctuations in the flow velocity of the Antarctic Shirase Glacier over an 11-year period
- Crustal movement of Antarctica and Syowa Station based on GPS measurements
- Joint AWI-NIPR airborne operations in the past and the future
- Installation of the superconducting gravimeter CT(#043) at Syowa Station, Antarctica
- Syowa Superconducting Gravimeter Raw Data and Associated Expedition Reports (Explanatory CD-ROM)
- METEOROLOGICAL DATA AT ASUKA CAMP, ANTARCTICA IN 1987
- Meteorological data at Asuka Camp, Antarctica in 1987(Meteorology 21)
- PLANNED EXPLOSION SEISMIC EXPERIMENTS IN EAST QUEEN MAUD LAND USING A PENETRATOR
- Category of contribution: Solid Earth geophysics validation of global ocean tide models using the Superconducting gravimeter data at Syowa Station, Antarctica, and in-situ tide gauge and bottom-pressure observations
- Detection of grounding line and vertical displacement of ice shelf by SAR interferometry -A case study for the Stanjukovicha Ice Shelf, East Antarctica, using ERS tandem SAR data-
- Sea surface height determination by GPS in sea ice region of Lutzow-Holm Bay, Antarctica
- A case study of generating a digital elevation model for the Soya Coast area, Antarctica, using JERS-1 SAR interferometry
- Preliminary study to generate a DEM of Amundsen Bay, Antarctica by interferometric SAR
- Surface configuration of the Antarctic ice sheet in the sector 30゜E - 80゜E using SEASAT altimetry data
- Reply
- Incessant excitation of the Earth's free oscillations
- RELATION BETWEEN THE DISTRIBUTION OF DAMAGE CAUSED BY THE 1995 HYOGOKEN-NAMBU EARTHQUAKE AND GROUND VIBRATION CHARACTERISTICS INFERRED FROM MICROSEISMS
- OBSERVATIONS OF EARTH TIDES AND EARTH'S FREE OSCILLATIONS BY A SUPERCONDUCTING GRAVIMETER AT SYOWA STATION ANTARCTICA
- Resonance Paramenters of the Free Core Nutation Measured from Three Superconducting Gravimeters in Japan
- OBSERVATION OF EARTH TIDES AND EARTH'S FREE OSCILLATIONS WITH A SUPERCONDUCTING GRAVIMETER AT SYOWA STATION (STATUS REPORT)
- PRESENT STATUS OF THE SURFACE SHIP GRAVITY MEASUREMENTS ON ICEBREAKER SHIRASE
- GEOIDAL UNDULATION AND GRAVITY ANOMALY AROUND THE JAPANESE ANTARCTIC STATIONS ESTIMATED FROM BOTH SATELLITE ALTIMETER DATA AND SURFACE GRAVITY DATA
- SEISMIC OBSERVATION WITH LOCAL TELEMETRY NETWORK AROUND SYOWA STATION, EAST ANTARCTICA (2)
- Geoidal undulation and gravity anomaly around the Japanese Antarctic stations estimated from both satellite altimeter data and surface gravity data
- Seismic observation with local telemetry network around Syowa Station, East Antarctica (2)
- SEISMIC OBSERVATION WITH LOCAL TELEMETRY NETWORK AROUND SYOWA STATION, EAST ANTARCTICA
- GRAVITY MAPPING AROUND THE JAPANESE ANTARCTIC STATIONS
- A PRELIMINARY REPORT OF EXPLOSION SEISMIC EXPERIMENTS IN MOUNT EREBUS, ANTARCTICA
- Deep crustal structure along the profile between Syowa and Mizuho Stations, East Antarctica
- Upper crustal structure beneath the Ongul Island, East Antarctica
- Deep crustal structure along the profile between Syowa and Mizuho Stations, East Antarctica, revealed by explosion seismic experiments (abstract)
- Upper crustal structure in the vicinity of Syowa Station, East Antarctica, as revealed by explosion seismic experiments (abstract)
- CODA 〓 OF LOCAL EARTHQUAKES OBSERVED ON THE SOUTHEAST TIBETAN PLATEAU : COMPARISON WITH LUTZOW-HOLM BAY REGION, EAST ANTARCTICA
- SHEAR WAVE 〓 STRUCTURE FOR THE LITHOSPHERE IN THE LUTZOW-HOLM BAY REGION, EAST ANTARCTICA
- HETEROGENEITY OF LITHOSPHERE IN THE LUTZOW-HOLM BAY REGION, EAST ANTARCTICA
- Estimation of seasonal changes in the flow of Shirase Glacier using JERS-1/SAR image correlation
- Why is Shirase Glacier turning its flow direction eastward?
- Geodesy reference points within Syowa Station, Antarctica, and their local geodetic ties
- The first year of Antarctic VLBI observations
- A study of the seismic and volcanic activity of Mount Erebus, Antarctica, 1981-1982
- Explosion earthquakes of Mount Erebus, Antarctica
- INSTALLATION OF GEOMAGNETIC ABSOLUTE OBSERVATION POINT AT SEAL ROCK, EAST ANTARCTICA, AND THE ABSOLUTE OBSERVATIONS IN 1987
- Installation of geomagnetic absolute observation point at Seal Rock, East Antarctica and the absolute observations in 1987
- UPPER ATMOSPHERE PHYSICS DATA, SYOWA AND ASUKA STATIONS, 1987
- Upper atmosphere physics data, Syowa and Asuka Stations, 1987(Upper Atmosphere Physics 7)
- Tidal gravity variations revisited at Vostok Station, Antarctica
- CUMULATE INCLUSIONS FROM TURTLE ROCK, ROSS ISLAND, ANTARCTICA
- Validation of grounding line of the East Antarctic Ice Sheet derived by ERS-1/2 interferometric SAR data
- INTERMITTENT MICRO-SEISMIC ACTIVITIES AROUND SYOWA STATION, EAST ANTARCTICA
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1987
- GRAVITY TIDES OBSERVED AT SYOWA AND ASUKA STATIONS, ANTARCTICA
- Gravity tides observed at Syowa and Asuka Stations,Antarctica (abstract)
- Heterogeneity of lithosphere in the Lutzow-Holm Bay region, East Antarctica (abstract)
- PRELIMINARY REPORT OF LOCAL SEISMIC ACTIVITY AROUND SYOWA STATION, EAST ANTARCTICA
- GLACIER-GENERATED GROUND MOTIONS AT BOMI, SOUTHEASTERN TIBET
- LOCAL GEODETIC TIE BETWEEN THE VLBI ANTENNA REFERENCE POINT AND THE SCAR GPS SITE AT SYOWA STATION, ANTARCTICA
- Southern Ocean mass variation studies using GRACE and satellite altimetry
- GEOIDAL UNDULATION AND GRAVITY ANOMALY AROUND ANTARCTICA FROM GEOSAT SATELLITE ALTIMETRY
- Precise Determination of Local Gravity Field Using Both the Satellite Altimeter Data and the Surface Gravity Data
- GRAVITY SURVEY ALONG THE L-AND AB-ROUTES, EAST DRONNINGMAUD LAND, ANTARCTICA
- Geophysical Data in East Dronning Maud Land, Antarctica, Obtained by the 28th Japanese Antarctic Research Expedition in 1987 (Earth Science 5)
- Long-term underground temperature measurements by quartz thermometers at Syowa Station, East Antarctica
- Geophysical data in the Luzow-Holm Bay region and the Mizuho Plateau, Antarctica by JARE-21 and JARE-22(Earth Science 1)
- AEROMAGNETIC SURVEY AROUND SYOWA STATION, ANTARCTICA (2) FLIGHTS NO. 6-10 BY JARE-21
- SATELLITE DOPPLER STATIONS IN THE JAPANESE ANTARCTIC RESEARCH REGION : (1) AROUND SYOWA STATION BY JARE-21
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1985
- SATELLITE DOPPLER STATIONS IN THE JAPANESE ANTARCTIC RESEARCH REGION (2) Around Asuka Station by JARE-28 in 1987
- On the flow velocity of the ice sheet along the traverse route from Syowa to Mizuho Station, East Antarctica
- Geophysical data in the Luzow-Holm Bay region and the Mizuho Plateau, Antarctica by JARE-21(Earth Science 3)
- MAGNETIC ANOMALIES OF PRECAMBRIAN TERRANES OF THE EAST ANTARCTIC SHIELD COASTAL REGION (20°E-50°E)
- DIGITAL DATA ACQUISITION SYSTEM OF THE JAPANESE ANTARCTIC RESEARCH AIRCRAFT PILATUS PORTER PC-6
- NNSS translocation test in the Kanto district with special application to Antarctic research program
- Focal mechanisms and seismic moments of large earthquakes in the Antarctic Peninsula-Drake Pasage region (abstract)
- Seismological bulletin of Syowa Station, Antarctica, 1983(Seismology 18)
- Seismological bulletin of Syowa Station, Antarctica, 1984(Seismology 19)
- Seismological bulletin of Syowa Station, Antarctica(Seismology 16)
- Seismological bulletin of Syowa Station, Antarctica, 1982(Seismology 17)
- Aeromagnetic survey around Syowa Station, Antarctica.(2) Flights No.6-10 by JARE-21(Earth Science 2)
- An aeromagnetic survey over the Shirase Glacier
- Seismological bulletin of Syowa Station, Antarctica, 1980(Seismology 15)
- Seismological bulletin of Syowa Station, Antarctica, 1985(Seismology 20)
- Seismological bulletin of Syowa Station, Antarctica, 1987(Seismology 22)
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1984
- SYOWA STATION; OBSERVATORY FOR GLOBAL GEODESY IN ANTARCTICA (A REVIEW)
- AEROMAGNETIC SURVEY AROUND SYOWA STATION, ANTARCTICA (1) FLIGHTS NO.11-M2 BY JARE-21
- AEROMAGNETIC SURVEY AROUND SYOWA STATION, ANTARCTICA (3) FLIGHTS NO. 14-Y2 BY JARE-21
- Geomagnetic anomalies over the moraine field to the north of Mizuho Station, East Antarctica
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1982
- Temporal changes in crevasses in the middle Slessor Glacier, Coats Land, East Antarctica through SAR data analysis
- Seismological Bulletin of Syowa Station, Antarctica, 1980
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1983
- Seismological Bulletin of Syowa Station, Antarctica, 1981
- Gravity measurements with a portable absolute gravimeter A10 in Syowa Station and Langhovde, East Antarctica