Description: The IndGG-SH2021 is the Indian Gravimetric Geoid model developed using the Stokes-Helmert method. Data used are terrestrial gravity anomalies from GETECH, satellite-altimeter derived marine gravity anomalies, MERIT digital elevation model, EGM2008 and GO_CONS_GCF_2_DIR_R5 global geopotential models. The Vaníček and Kleusberg modified Stokes kernel was used in the calculations with various combinations of modification degree and integration radius. This gravimetric geoid model was obtained with the modification degree of 300 and an integration radius of 1°. The IndGG-SH2021 model extends from 7° N to 37° N latitude and 68° E to 98° E longitude with a grid spacing of 0.02°×0.02° and it is referred to the GRS80 ellipsoid. On validation with the available GNSS/levelling data, mean±STD (in m) for India is -0.33±0.49. However, on cluster-wise validation in the four regions of the country, Uttar Pradesh West, Uttar Pradesh East, Hyderabad, and Bangalore, mean±STD (in m) are -0.73±0.21, -0.84±0.09, -0.00±0.16, and 0.72±0.03, respectively. The geoid model is provided in ISG format 2.0 (ISG Format Specifications), while the file in its original data format is available at the model ISG webpage.
Global identifier:
Doi(
"10.5880/isg.2021.009",
)
Origins: /Wissenschaft/GFZ Data Services
Tags: Geografische Koordinaten ? Daten ? Geodäsie ? EARTH SCIENCE > SOLID EARTH > GEODETICS > GEOID CHARACTERISTICS ? EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITY ? Geoid model ? ISG ? India ? Stokes-Helmert approach ? Vaníček and Kleusberg Stokes kernel modification ?
License: cc-by/4.0
Language: Englisch/English
Issued: 2021-01-01
Time ranges: 2021-01-01 - 2021-01-01
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