a deviation from the normal value of gravity at the earth's surface, caused by density differences at depth, for example those caused by a buried mineral body
Examples of 'gravity anomaly' in a sentence
gravity anomaly
In this study, based on marine gravity anomaly reference maps, new characteristic parameters of the gravity anomaly were constructed.
Hubiao Wang, Lin Wu, Hua Chai, Yaofei Xiao, Houtse Hsu, Yong Wang 2017, 'Characteristics of Marine Gravity Anomaly Reference Maps and Accuracy Analysis ofGravity Matching-Aided Navigation', Sensorshttps://www.mdpi.com/1424-8220/17/8/1851. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Coincidently, these four calderas are all low-gravity-anomaly type.
Izumi Yokoyama 2017, 'Origin of calderas: discriminating between collapses and explosions', Annals of Geophysicshttp://www.annalsofgeophysics.eu/index.php/annals/article/view/7010. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The obtained free-air gravity anomaly profiles correlate well with those of bedrock elevation.
Kokichi Kamiyama, Masaki Kanao, Maeno Hideo, Teruo Furukawa 1994, 'Gravity survey on the Mizuho Plateau, East Antarctica along the traverse routes toDome-F from Syowa Station', Antarctic Recordhttp://doi.org/10.15094/00008841. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Studies indicate that the new parameters may better characterize the marine gravity anomaly.
Hubiao Wang, Lin Wu, Hua Chai, Yaofei Xiao, Houtse Hsu, Yong Wang 2017, 'Characteristics of Marine Gravity Anomaly Reference Maps and Accuracy Analysis ofGravity Matching-Aided Navigation', Sensorshttps://www.mdpi.com/1424-8220/17/8/1851. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This paper investigates a method for high accuracy large scale gravity anomaly data reconstruction.
Yapeng Yang, Meiping Wu, Jinling Wang, Kaidong Zhang, Juliang Cao, Shaokun Cai 2014, 'Experimental Investigations on Airborne Gravimetry Based on Compressed Sensing',Sensorshttp://www.mdpi.com/1424-8220/14/3/5426. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The basement ridge peaks are usually several thousand meters wide, and show obvious high abnormal gravity anomaly.
R Gireesh, D K Pandey 2014, 'Basement characteristics along South West Indian Margin', Petroleum Exploration and Developmenthttp://www.sciencedirect.com/science/article/pii/S1876380414600070. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This paper presents a new approach for interpretation of residual gravity anomaly profiles, assuming horizontal cylinders as source.
O. N. Ucan, O. Osman, A. Muhittin Albora 2006, 'A new approach for residual gravity anomaly profile interpretations: Forced NeuralNetwork (FNN)', Annals of Geophysicshttp://www.annalsofgeophysics.eu/index.php/annals/article/view/3099. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Then, that surface can be converted into marine gravity anomaly or bathymetry by using the mathematical model.
T. D. Tran, T. H. M. Ho 2016, 'CONTRIBUTION OF SATELLITE ALTIMETRY DATA IN GEOLOGICAL STRUCTURE RESEARCH IN THE SOUTHCHINA SEA', The International Archives of the Photogrammetry, Remote Sensing and Spatial InformationScienceshttps://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B8/1187/2016/isprs-archives-XLI-B8-1187-2016.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)