GRAVIMETRIC TIDAL FACTORS AT SYOWA STATION OBTAINED FROM THREE-YEAR OBSERVATIONS WITH A SUPERCONDUCTING GRAVIMETER
Gravity change observations with a superconducting gravimeter started in March 22,1993 at Syowa Station, Antarctica. The observations have been continuing almost four years until now. In this paper, the first three years of data are investigated for the purpose of obtaining detailed tidal constants...
Main Authors: | , , , , , |
---|---|
Format: | Report |
Language: | English |
Published: |
National Astronomical Observatory
1997
|
Subjects: | |
Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2838 http://id.nii.ac.jp/1291/00002838/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2838&item_no=1&attribute_id=18&file_no=1 |
id |
ftnipr:oai:nipr.repo.nii.ac.jp:00002838 |
---|---|
record_format |
openpolar |
spelling |
ftnipr:oai:nipr.repo.nii.ac.jp:00002838 2023-05-15T13:49:00+02:00 GRAVIMETRIC TIDAL FACTORS AT SYOWA STATION OBTAINED FROM THREE-YEAR OBSERVATIONS WITH A SUPERCONDUCTING GRAVIMETER タムラ ヨシアキ アオヤマ ユウイチ ナワ カズナリ Yoshiaki TAMURA Yuichi AOYAMA Kazunari NAWA 1997-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2838 http://id.nii.ac.jp/1291/00002838/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2838&item_no=1&attribute_id=18&file_no=1 en eng National Astronomical Observatory Fuculty of Science, Kanazawa University:Now at The Graduate University for Advanced Studies, National Astronomical Observatory School of Science, Nagoya University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2838 http://id.nii.ac.jp/1291/00002838/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 10, 1-10(1997-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2838&item_no=1&attribute_id=18&file_no=1 earth tide gravity superconducting gravimeter ocean tide loading Departmental Bulletin Paper P(論文) 1997 ftnipr 2022-11-26T19:42:17Z Gravity change observations with a superconducting gravimeter started in March 22,1993 at Syowa Station, Antarctica. The observations have been continuing almost four years until now. In this paper, the first three years of data are investigated for the purpose of obtaining detailed tidal constants for diurnal, semidiurnal and terdiurnal waves. The observed tidal constants show rather large δ factors of 1.2 and of 1.5 for diurnal and semidiurnal tides, respectively. Those apparent large δ factors could be explained by large ocean tide loading. After applying several corrections to the observed tidal parameters, the ocean-tide corrected tidal factors were compared with theoretical ones by an elastic, ellipsoidal, rotating Earth model. Finally, the obtained tidal factors are consistent with theoretical ones within the discrepancy of 1% for principal constituents. More detailed discussion, for example, to see the latitude dependency of tidal factors, awaits accurate calibration of the scale constant of the gravimeter. Report Antarc* Antarctica National Institute of Polar Research Repository, Japan Syowa Station |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
earth tide gravity superconducting gravimeter ocean tide loading |
spellingShingle |
earth tide gravity superconducting gravimeter ocean tide loading タムラ ヨシアキ アオヤマ ユウイチ ナワ カズナリ Yoshiaki TAMURA Yuichi AOYAMA Kazunari NAWA GRAVIMETRIC TIDAL FACTORS AT SYOWA STATION OBTAINED FROM THREE-YEAR OBSERVATIONS WITH A SUPERCONDUCTING GRAVIMETER |
topic_facet |
earth tide gravity superconducting gravimeter ocean tide loading |
description |
Gravity change observations with a superconducting gravimeter started in March 22,1993 at Syowa Station, Antarctica. The observations have been continuing almost four years until now. In this paper, the first three years of data are investigated for the purpose of obtaining detailed tidal constants for diurnal, semidiurnal and terdiurnal waves. The observed tidal constants show rather large δ factors of 1.2 and of 1.5 for diurnal and semidiurnal tides, respectively. Those apparent large δ factors could be explained by large ocean tide loading. After applying several corrections to the observed tidal parameters, the ocean-tide corrected tidal factors were compared with theoretical ones by an elastic, ellipsoidal, rotating Earth model. Finally, the obtained tidal factors are consistent with theoretical ones within the discrepancy of 1% for principal constituents. More detailed discussion, for example, to see the latitude dependency of tidal factors, awaits accurate calibration of the scale constant of the gravimeter. |
format |
Report |
author |
タムラ ヨシアキ アオヤマ ユウイチ ナワ カズナリ Yoshiaki TAMURA Yuichi AOYAMA Kazunari NAWA |
author_facet |
タムラ ヨシアキ アオヤマ ユウイチ ナワ カズナリ Yoshiaki TAMURA Yuichi AOYAMA Kazunari NAWA |
author_sort |
タムラ ヨシアキ |
title |
GRAVIMETRIC TIDAL FACTORS AT SYOWA STATION OBTAINED FROM THREE-YEAR OBSERVATIONS WITH A SUPERCONDUCTING GRAVIMETER |
title_short |
GRAVIMETRIC TIDAL FACTORS AT SYOWA STATION OBTAINED FROM THREE-YEAR OBSERVATIONS WITH A SUPERCONDUCTING GRAVIMETER |
title_full |
GRAVIMETRIC TIDAL FACTORS AT SYOWA STATION OBTAINED FROM THREE-YEAR OBSERVATIONS WITH A SUPERCONDUCTING GRAVIMETER |
title_fullStr |
GRAVIMETRIC TIDAL FACTORS AT SYOWA STATION OBTAINED FROM THREE-YEAR OBSERVATIONS WITH A SUPERCONDUCTING GRAVIMETER |
title_full_unstemmed |
GRAVIMETRIC TIDAL FACTORS AT SYOWA STATION OBTAINED FROM THREE-YEAR OBSERVATIONS WITH A SUPERCONDUCTING GRAVIMETER |
title_sort |
gravimetric tidal factors at syowa station obtained from three-year observations with a superconducting gravimeter |
publisher |
National Astronomical Observatory |
publishDate |
1997 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2838 http://id.nii.ac.jp/1291/00002838/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2838&item_no=1&attribute_id=18&file_no=1 |
geographic |
Syowa Station |
geographic_facet |
Syowa Station |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2838 http://id.nii.ac.jp/1291/00002838/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 10, 1-10(1997-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2838&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250319309701120 |