Results 81 to 90 of about 2,632 (195)

Pemodelan Geoid Kota Semarang [PDF]

, 2013
Kota Semarang merupakan ibukota provinsi Jawa Tengah yang memiliki kondisi topografi yang unik dengan variasi dataran dan perbukitan. Kondisi topografi yang seperti itu menjadikan penentuan tinggi orthometrik dengan metode sipat datar menyebar ke seluruh
Kahar, S. (Sutomo), Rastawira, T. (Tanggo), Sabri, L. M. (L)   +2 more
core  

Exploration of tectonic structures with GOCE in Africa and across-continents [PDF]

, 2015
The gravity anomaly field over the whole Earth obtained by the GOCE satellite is a revolutionary tool to reveal geologic information on a continental scale for the large areas where conventional gravity measurements have yet to be made.
Braitenberg, Carla
core   +1 more source

On the Accuracy of EGM2008 with Measured Data Based on Strap-down Airborne Gravimetry [PDF]

Proceedings of the 2015 2nd International Workshop on Materials Engineering and Computer Sciences, 2015
Gravity survey is an important research topic in geophysics and geodynamics. This paper analyzes the accuracy of EGM2008, the newest Earth gravitational model, in two areas in Shandong Province of China. By comparing the gravity anomaly data from the model with those obtained by a strap-down airborne gravimeter called SGA-WZ, it shows that error ...
Shaokun Cai, Meiping Wu, Shaoliang Li
openaire   +1 more source

Widespread and Exceptional Reduction in River Water Levels Across the Amazon Basin During the 2023 Extreme Drought Revealed by Satellite Altimetry and SWOT

Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract In late 2023, the Amazon River Basin experienced its most extreme drought to date, putting its population and ecosystem at risk. Gauges that were still functioning measured the lowest river water levels (RWL) on record. Here, satellite observations, including Surface Water Ocean Topography (SWOT), reveal the spread and timing of extremely low ...
Daniel Moreira, Fabrice Papa, Alice Fassoni‐Andrade, Ayan Fleischmann, Sly Wongchuig, Rodrigo Paiva, Adrien Paris, Frederic Frappart, Jefferson Melo, Jean‐Francois Crétaux, André Martinelli Santos, Pierre‐André Garambois, Benjamin Kitambo, Stéphane Calmant   +13 more
wiley   +1 more source

Towards the Selection of an Optimal Global Geopotential Model for the Computation of the Long-Wavelength Contribution: A Case Study of Ghana

Geosciences, 2017
The selection of a global geopotential model (GGM) for modeling the long-wavelength for geoid computation is imperative not only because of the plethora of GGMs available but more importantly because it influences the accuracy of a geoid model.
Caleb Iddissah Yakubu, Vagner Gonçalves Ferreira, Cosmas Yaw Asante   +2 more
doaj   +1 more source

Vegetation height products between 60° S and 60° N from ICESat GLAS data. [PDF]

, 2012
We present new coarse resolution (0.5 ×0.5 )vegetation height and vegetation-cover fraction data sets between 60 S and 60 N for use in climate models and ecological models.
Berni, J.A., Chasmer, L., Hill, R.A., Hopkinson, C., Kljun, N., Los, S.O, Mahoney, C., North , P.R.J, Rosette, J., Suarez, J., van Gorsel, E.   +10 more
core   +2 more sources

Detection of Landslide‐Generated Tsunami by Shipborne GNSS Precise Point Positioning

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Precise point positioning (PPP) of ships using Global Navigation Satellite System (GNSS) data reveals the precise movements of marine vessels. This method may quantify anomalies in sea surface height with implications for oceanographic monitoring, exploration, and tsunami warning. The GNSS PPP data from the R/V Sikuliaq, a research ship of the
Adam E. Manaster, Anne F. Sheehan, Dara E. Goldberg, Katherine R. Barnhart, Ethan H. Roth   +4 more
wiley   +1 more source

Combined Classical and Quantum Accelerometers for Future Satellite Gravity Missions

Earth and Space Science, Volume 12, Issue 4, April 2025.
Abstract Cold atom interferometry based quantum accelerometers (Q‐ACCs) are very promising for future satellite gravity missions thanks to their strength in providing long‐term stable and precise measurements of non‐gravitational accelerations. However, their limitations due to the low measurement rate and the existence of ambiguities in the raw sensor
Alireza HosseiniArani, Manuel Schilling, Benjamin Tennstedt, Alexey Kupriyanov, Quentin Beaufils, Annike Knabe, Arpetha C. Sreekantaiah, Franck Pereira dos Santos, Steffen Schön, Jürgen Müller   +9 more
wiley   +1 more source

Crustal and Upper Mantle Density Structure Beneath the Qinghai-Tibet Plateau and Surrounding Areas Derived from EGM2008 Geoid Anomalies

ISPRS International Journal of Geo-Information, 2016
As the most active plateau on the Earth, the Qinghai-Tibet Plateau (TP) has a complex crust–mantle structure. Knowledge of the distribution of such a structure provides information for understanding the underlying geodynamic processes.
Honglei Li, Jian Fang
doaj   +1 more source

Improved Water Level Retrieval in Complex Riverine Environments: Sentinel‐3 and Sentinel‐6 Altimetry Over China's Rivers

Water Resources Research, Volume 61, Issue 4, April 2025.
Abstract The decline in in situ water level measurements since the 1980s has impeded our ability to fully understand hydrological and hydrodynamic processes, particularly in ungauged river reaches, and how global and regional water cycles respond to climate change.
Chenqi Fang, Di Long, Qi Huang, Fanyu Zhao, Huaichuan Liu, Xingwu Duan, Aizhong Hou   +6 more
wiley   +1 more source