Importance of Wind for the Excitation of Chandler Wobble as Inferred from Wobble Domain Analysis.

• Furuya Masato

  Department of Earth and Planetary Physics, The University of Tokyo

• Hamano Yozo

  Department of Earth and Planetary Physics, The University of Tokyo

• Naito Isao

  Division of Earth Rotation, National Astronomical Observatory

Bibliographic Information

Other Title

• Importance of Wind for the Excitation o

Abstract

We explored the atmospheric contribution to the excitation of Chandler wobble (CW), which has spanned about 11 years beginning from September 1983. The atmospheric angular momentum (AAM) function presented by the Japan Meteorological Agency (JMA) and the wobble data set (SPACE93) are employed. We devised a wobble domain method of analysis which enables us to quantify the narrow band power of AAM. The AAM-induced wobble closely resembles the observed wobble, and wind contribution turns out to dominate over atmospheric pressure contribution in the vicinity of the Chandler frequency. When only pressure contribution is taken into account, it is insufficient, as shown in previous studies.

Journal

• Journal of Physics of the Earth

  Journal of Physics of the Earth 45 (3), 177-188, 1997

  The Seismological Society of Japan, The Volcanological Society of Japan, The Geodetic Society of Japan

Keywords

• General Earth and Planetary Sciences

Details

• CRID: 1390282681486819200
• NII Article ID: 130003963254
• NII Article ID: 10002428902
• NII Book ID: AA00704960
• DOI: 10.4294/jpe1952.45.177
• ISSN: 18842305
• ISSN: 00223743
• NDL BIB ID: 4326370
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4326370
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed