Delineation of structural lineaments of the Southwest Sub-basin (East Vietnam Sea) using global marine gravity model from CryoSat-2 and Jason-1 satellites

2021 ◽  
pp. 1-14
Author(s):  
Luan Thanh Pham ◽  
Saulo P. Oliveira ◽  
Minh Huy Le ◽  
Trinh Trong Phan ◽  
Tich Van Vu ◽  
...  
Keyword(s):  
Science ◽  
2014 ◽  
Vol 346 (6205) ◽  
pp. 65-67 ◽  
Author(s):  
David T. Sandwell ◽  
R. Dietmar Müller ◽  
Walter H. F. Smith ◽  
Emmanuel Garcia ◽  
Richard Francis

Gravity models are powerful tools for mapping tectonic structures, especially in the deep ocean basins where the topography remains unmapped by ships or is buried by thick sediment. We combined new radar altimeter measurements from satellites CryoSat-2 and Jason-1 with existing data to construct a global marine gravity model that is two times more accurate than previous models. We found an extinct spreading ridge in the Gulf of Mexico, a major propagating rift in the South Atlantic Ocean, abyssal hill fabric on slow-spreading ridges, and thousands of previously uncharted seamounts. These discoveries allow us to understand regional tectonic processes and highlight the importance of satellite-derived gravity models as one of the primary tools for the investigation of remote ocean basins.


2016 ◽  
Vol 13 (3) ◽  
pp. 443-454
Author(s):  
Piras Romano

The great majority of empirical studies on internal migration across Italian regions either ignores the long-run perspective of the phenomenon or do not consider push and pull factors separately. In addition, Centre-North to South flows, intra-South and intra-Centre-North migration have not been studied. We aim to fill this gap and tackle interregional migration flows from different geographical perspectives. We apply four panel data estimators with different statistical assumptions and show that long-run migration flows from the Mezzogiorno towards Centre-Northern regions are well explained by a gravity model in which per capita GDP, unemployment and population play a major role. On the contrary, migration flows from Centre-North to South has probably much to do with other social and demographic factors. Finally, intra Centre-North and intra South migration flows roughly obey to the gravity model, though not all explicative variables are relevant.


2016 ◽  
Author(s):  
Yoto V. Yotov ◽  
Roberta Piermartini ◽  
José-Antonio Monteiro ◽  
Mario Larch

2020 ◽  
Vol 24 (2) ◽  
pp. 121-163
Author(s):  
Yun Ju Ham ◽  
Yun Jun Kim ◽  
Geun Seok Hong

Author(s):  
Ольга Сергеевна Чудинова ◽  
Екатерина Николаевна Корнейченко ◽  
Ольга Борисовна Чаганова ◽  
Анастасия Михайловна Ротова

В статье представлены результаты проверки адекватности гравита-ционной модели в условиях глобализации мировой торговли. По статистическим данным для стран СНГ за 2011-2018 годы на основе гравитационной модели исследовано влияние масштаба экономики торговых партнеров и расстояния между странами на объем импорта. The article presents the results of assessing the adequacy of the gravity model in the context of world trade globalization. According to statistics for the CIS countries for 2011-2018 the effect of size of economies and distance between the countries on import volumes is studied on the basis of gravity model.


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