Browse > Article
http://dx.doi.org/10.5140/JASS.2016.33.4.295

Changes in the Earth's Spin Rotation due to the Atmospheric Effects and Reduction in Glaciers  

Na, Sung-Ho (Department of Space Survey Information Technology, Ajou University)
Cho, Jungho (Korea Astronomy and Space Science Institute)
Kim, Tu-Hwan (Department of Space Survey Information Technology, Ajou University)
Seo, Kiweon (Department of Earth Science Education, Seoul National University)
Youm, Kookhyoun (Department of Earth Science Education, Seoul National University)
Yoo, Sung-Moon (Korea Astronomy and Space Science Institute)
Choi, Byungkyu (Korea Astronomy and Space Science Institute)
Yoon, Hasu (Korea Astronomy and Space Science Institute)
Publication Information
Journal of Astronomy and Space Sciences / v.33, no.4, 2016 , pp. 295-304 More about this Journal
Abstract
The atmosphere strongly affects the Earth's spin rotation in wide range of timescale from daily to annual. Its dominant role in the seasonal perturbations of both the pole position and spinning rate of the Earth is once again confirmed by a comparison of two recent data sets; i) the Earth orientation parameter and ii) the global atmospheric state. The atmospheric semi-diurnal tide has been known to be a source of the Earth's spin acceleration, and its magnitude is re-estimated by using an enhanced formulation and an up-dated empirical atmospheric S2 tide model. During the last twenty years, an unusual eastward drift of the Earth's pole has been observed. The change in the Earth's inertia tensor due to glacier mass redistribution is directly assessed, and the recent eastward movement of the pole is ascribed to this change. Furthermore, the associated changes in the length of day and UT1 are estimated.
Keywords
earth rotation; atmosphere; glacier;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Na SH, Lee S, Re-estimation of Earth spin rotational energy decrease due to tidal friction, Geosci. J. 18, 1-6 (2014). http:// dx.doi.org/10.1007/s12303-013-0069-0   DOI
2 Na SH, Cho JH, Baek J, Kwak Y, Yoo SM, Spectral analysis on Earth's spin rotation for the recent 30 years, J. Korean Phys. Soc. 61, 152-157 (2012). http://dx.doi.org/10.3938/ jkps.61.152   DOI
3 Na SH, Kwak Y, Cho JH, Yoo SM, Cho S, Characteristics of perturbations in recent length of day and polar motion, J. Astron. Space Sci. 30, 33-41 (2013). http://dx.doi.org/10.5140/JASS.2013.30.1.033   DOI
4 Nakiboglu SM, Lambeck K, Deglaciation effects on the rotation of the Earth, Geophys. J. Int. 62, 49-58 (1980). http://dx.doi.org/10.1111/j.1365-246X.1980.tb04843.x   DOI
5 Petit G, Luzum B, IERS Conventions (2010), International Earth Rotation and Reference Systems Service Technical Note, No. 36 (2010).
6 Ray RD, Ponte RM, Barometric tides from ECMWF operational analyses, Ann. Geophys. 21, 1897-1910 (2003). http:// dx.doi.org/10.5194/angeo-21-1897-2003   DOI
7 Shepherd A, Ivins ER, Geruo A, Barletta VR, Bentley MJ, et al., A reconciled estimate of Ice-Sheet mass balance, Science 338, 1183-1189 (2012). http://dx.doi.org/10.1126/ science.1228102   DOI
8 Trupin AS, Effects of polar ice on the Earth's rotation and gravitational potential, Geophys. J. Int. 113, 273-283 (1993). http://dx.doi.org/10.1111/j.1365-246X.1993.tb00887.x   DOI
9 Wahr J, Polar motion models: angular momentum approach, Proceedings of the workshop on 'Forcing of polar motion in the Chandler frequency band: a contribution to understanding international climate variation', eds. Plag HP, Chao B, Gross R, van Dam T (European Center for Geodynamics and Seismology, Luxemburg, 2005), 1-7.
10 Chen JL, Long-term polar motion and climate change, in 2012 AOGS - AGU (WPGM) Joint Assembly, Sentosa Island, Singapore, 13-17 Aug 2012.
11 Chen JL, Wilson CR, Ries JC, Tapley BD, Rapid ice melting drives Earth's pole to the east, Geophys. Res. Lett. 40, 2625- 2630 (2013). http://dx.doi.org/10.1002/grl.50552   DOI
12 Dehant V, Mathews MP, Earth rotation variations, in Treatise of Geophysics, vol. 3, Geodesy, eds. Herring T, Schubert J (Elsevier, Oxford, 2009), 295-349.
13 Dickey JO, Bender PL, Faller JE, Newhall XX, Ricklefs RL, et al., Lunar laser ranging: a continuing legacy of the Apollo program, Science 265, 482-490 (1994). http://dx.doi.org/10.1126/science.265.5171.482   DOI
14 Eubanks TM, Variations in the orientation of the Earth, in American Geophysical Union Geodynamics Series, vol. 24, Contributions of space geodesy to geodynamics: Earth dynamics, eds. Smith DE, Turcotte DL (American Geophysical Union, Washington, D. C., 1993), 1-54.
15 Fairbanks RG, A 17,000-year glacio-eustatic sea level record: influence of glacial melting rates on the Younger Dryas event and deep-ocean circulation, Nature 342, 637-642 (1989). http://dx.doi.org/10.1038/342637a0   DOI
16 Gasperini P, Sabadini R, Yuen DA, Excitation of the Earth's rotational axis by recent glacial discharges, Geophys. Res. Lett. 13, 533-536 (1986). http://dx.doi.org/10.1029/ GL013i006p00533   DOI
17 Gross RS, Earth rotation variations - long period, in Treatise on Geophysics, vol. 3, Geodesy, eds. Herring T, Schubert J (Elsevier, Oxford, 2009), 239-294.
18 Harada Y, Long-term polar motion on a quasi-fluid planetary body with an elastic lithosphere: semi-analytic solutions of the time-dependent equation, Icarus 220, 449-465 (2012). http://dx.doi.org/10.1016/j.icarus.2012.05.024   DOI
19 Bizouard C, Gambis D, The combined solution C04 for Earth orientation parameters consistent with international terrestrial reference frame 2005, in International Association of Geodesy Symposia, vol. 134, Geodetic Reference Frames, ed. Drewes H (Springer, Heidelberg, 2009), 265-270. http:// dx.doi.org/10.1007/978-3-642-00860-3_41   DOI
20 Chapront J, Chapront-Touze M, Francou G, A new determination of lunar orbital parameters, precession constant and tidal acceleration from LLR measurements, Astron. Astrophys. 387, 700-709 (2002). http://dx.doi.org/10.1051/0004-6361:20020420   DOI
21 Johnston P, Lambeck K, Postglacial rebound and sea level contributions to changes in the geoid and the Earth's rotation axis, Geophys. J. Int. 136, 537-558 (1999). http:// dx.doi.org/10.1046/j.1365-246x.1999.00738.x   DOI
22 Lambeck K, The Earth's variable rotation: geophysical causes and consequences (Cambridge University Press, New York, 1980).
23 McCarthy DD, Seidelmann PK, Time: from Earth rotation to atomic physics (Wiley-VCH, Weinheim, 2009).
24 Melchior P, The tides of the planet Earth (Pergamon Press, Oxford, 1983).
25 Mitrovica JX, Wahr J, Ice age Earth rotation, Ann. Rev. Earth Planet. Sci. 39, 577-616 (2011). http://dx.doi.org/10.1146/annurev-earth-040610-133404   DOI
26 Munk WH, MacDonald GJF, The rotation of the Earth: a geophysical discussion (Cambridge University Press, Cambridge, 1960).