Asthenospheric anelasticity effects on ocean tide loading around the East China Sea observed with GPS

Wang, Junjie; Penna, Nigel T.; Clarke, Peter J.; Bos, Machiel S.

doi:https://doi.org/10.5194/se-11-185-2020

Articles | Volume 11, issue 1

https://doi.org/10.5194/se-11-185-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Developments in the science and history of tides (OS/ACP/HGSS/NPG/SE...

https://doi.org/10.5194/se-11-185-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 11, issue 1

Research article

|

14 Feb 2020

Research article |

| 14 Feb 2020

Asthenospheric anelasticity effects on ocean tide loading around the East China Sea observed with GPS

Junjie Wang, Nigel T. Penna, Peter J. Clarke, and Machiel S. Bos

Supplement

https://doi.org/10.5194/se-11-185-2020-supplement

Data sets

Terms of service of GSI's GNSS stations data GSI http://datahouse1.gsi.go.jp/terras/terras_english.html

FES (Finite Element Solution)-Global tide, FES2014 LEGOS, NOVELTIS and CLS https://www.aviso.altimetry.fr/en/data/products/auxiliary-products/global-tide-fes.html

TPXO9-atlas G. D. Egbert and S. Y. Erofeeva http://volkov.oce.orst.edu/tides/tpxo9_atlas.html

GNSS Science Data JPL https://sideshow.jpl.nasa.gov/

J-DOSS: JODC Data On-line Service System JODC https://www.jodc.go.jp/jodcweb/JDOSS/index.html

Sea level measured by tide gauges from global oceans – the Joint Archive for Sea Level holdings, Version 5.5 P. C. Caldwell, M. A. Merrifield, and P. R. Thompson ftp://ftp.soest.hawaii.edu/uhslc/rqds

Model code and software

SPOTL: Some Programs for Ocean-Tide Loading D. C. Agnew https://igppweb.ucsd.edu/~agnew/Spotl/spotlmain.html

The OSU12 Global Ocean Tide Model, Version 1.0 H. S. Fok, C. K. Shum, and Y. Yi https://geodesy.geology.ohio-state.edu/oceantides/OSU12v1.0/readme1st.dat

Data Services Products: EMC-Reference Models IRIS DMC http://ds.iris.edu/ds/products/emc-referencemodels/

Short summary

Changes in the Earth's elastic strength at increasing timescales of deformation affect predictions of its response to the shifting weight of the oceans caused by tides. We show that these changes are detectable using GPS and must be accounted for but that 3-D or locally-tuned models of the Earth's behaviour around the East China Sea provide only slightly better predictions than a simpler model which varies only with depth. Use of this model worldwide will improve precise positioning by GPS.