I. Irwandi, D. Darisma, A.V.H. Simanjuntak, H. Sofyan, Asrillah
Determining the gravity reference point in the form of the absolute gravity acceleration value is necessary for education and research purposes. Department of Physics, Universitas Syiah Kuala (USK), has had the Scintrex CG-5 gravimetersince 2013 and should have had one absolute gravity point around the campus. A new gravity reference point was made at the Tugu Field (Lapangan Tugu) USK, which was derived from the gravity reference point BMKG Mata Ie with an absolute gravity value of 978102.87 mGal. First, we measured the relative difference in gravity's value between the two points using the Scintrex CG-5 gravimeter. The difference of gravity value at the Tugu Field with BMKG Mata Ie is 23.8356 mGal smaller so that the absolute gravity value is 978079.01 mGal. The result is consistent with the geological data where the rocks around BMKG Mata Ie are metamorphic rocks that began to form in the late Jurassic, while the strata at the Tugu Field consist of young alluvium in the Holocene epoch which has a lower rock density. To verify the absolute gravity value, it is compared with the gravity value obtained from the satellite TOPEX. Data from these satellites is around 978140.15 mGal with a difference of 61.14 mGal. © Published under licence by IOP Publishing Ltd.
STEM Research Center (STEM.id), Universitas Syiah Kuala, Indonesia; Physiscs Department, Universitas Syiah Kuala, Indonesia; Geophysical Engineering Department, Universitas Syiah Kuala, Indonesia; Meteorology, Climatology Dan Geophysical Agency (BMKG), Mata Ie, Indonesia; Statistics Department, Universitas Syiah Kuala, Indonesia; Institute for Applied Geosciences, Technische Universitat Berlin, Germany
Research at a Glance
Register to unlock
Topics & SDG Alignment
Register to unlock
Collaboration
Register to unlock
Author Profile (Selected)
Register to unlock
References Overview
Register to unlock
Journal & Source
Register to unlock
Metadata & Integrity
Register to unlock