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15 results for “gravity anomaly”
Gravity, Free-Air and Bouguer Anomaly Data in the Ivrea-Verbano Zone (Western Alps, Italy)
<p>Gravity dataset collected in the Ivrea-Verbano Zone (IVZ, Western Alps, Italy). </p><p>The data was collected in the frame of a gravity-based investigation and modelling of the Ivrea Geophysical Body. </p><p>For citation and further details on the work see Scarponi et al. (2020, GJI): <a href="https://doi.org/10.1093/gji/ggaa263">https://doi.org/10.1093/gji/ggaa263</a></p><p>The file contains the gravity data collected in the IVZ region, including free-air anomaly and Bouguer gravity anomaly (in mGal).</p><p>Longitude, Latitude coordinates are in degrees, elevation in meters.</p><p>Uncertainty on the final gravity data products and gravity data is 1 mGal.</p><p>---</p><p>Data collection, as well as the associated research, were supported by the Swiss National Science Foundation (SNF) (grant numbers PP00P2_157627 and PP00P2_187199).</p>
The global marine free air gravity anomaly model SDUST2022GRA
<p>SDUST2022GRA.nc is the global marine free air gravity anomaly model covering 80°S~82°N and 0~360°E on 1′×1′ grids. SDUST2022GRA is recovered from multi-radar and ICESat-2 laser altimeter data to investigate the contribution of ICESat-2.</p>
Standard Bouguer anomaly model achieved by multi-source Bouguer gravity anomaly Bayesian data fusion algorithm in Sichuan-Yunnan region
<p>* Method: Based on the equivalent source inversion and Bayesian uncertainty quantization theory, a new multi-source gravity data fusion algorithm is developed, which effectively solves the multi-source data fusion problem with different noise and datum.</p> <p>* Standard Bouguer anomaly is Fused from WGM2012 Bouguer gravity anomaly model and 394 gravity profile data measured in Sichuan-Yunnan region. Fusion anomaly results can eliminate datum draft between multi-source gravity and reduce incoherent noise.</p> <p>* Spatial resolution of the standard Bouguer anomaly is about 20 kilometers.</p> <p>* Correcting deviations means the difference between the fused standard Bouguer anomaly model and the WGM2012 Earth gravity model.</p>
Crustal thicknesses, Moho depths and 3-D density anomaly model for GJI paper: Crustal structure of onshore-offshore Atlantic Canada and environs from constrained 3-D gravity inversion using variable mesh depths by J. Kim Welford
<p>The files are provided as ascii text files in terms of both latitudes/longitudes and eastings/northings. For the 3-D density anomaly model, it is provided with columns of x, y, z, and absolute density. The conversions from latitudes/longitudes to eastings/northings for all of the models and maps in this work are computed with ellipsoid WGS-84 and UTM zone 19 using Generic Mapping Tools.</p>
SDUST2021GRA: Global marine gravity anomaly model recovered from Ka-band and Ku-band satellite altimeter data
<p>SDUST2021GRA is the global marine gravity anomaly model on a grid of 1′×1′, which is established from the altimeter data of <strong> </strong>Ka-band and Ku-band altimetry satellite including HY-2A. Its spatial coverage is 80°S-80°N. Assessed by the shipborne gravity data, the accuracy of SDUST2021GRA in the global is 2.37 mGal, and that in the open ocean is about 1.5 mGal.</p>
Data for Estimation of 3D Moho depths beneath Southern Indian Shield by inverting seismic constraint gravity anomalies
<p>This is a help file for a description of all Data used for the implementation of our present paper<br> 'Estimation of 3D Moho depths beneath Southern Indian Shield by inverting seismic constraint gravity anomalies.' </p> <p> </p>
A global marine gravity anomaly model SDUST2022GRA_IS2
<p>A global marine gravity anomaly model SDUST2022GRA_IS2 recovered from along- and across-track altimeter data of ICESat-2</p>
Bathymetry of the Antarctic continental shelf and ice shelf cavities from a 3D inversion of circumpolar gravity anomalies constrained by other data
Open the record for dataset details and reuse information.
Free-air gravity anomaly data at the continental margin and oceanic basin north of the Daimao Seamount of the South China Sea
<p>This archive includes the free-air gravity anomaly data (in mGal) from the continental margin to the oceanic basin north of the Daimao Seamount in the South China Sea. The data was collected with the help of the Guangzhou Marine Geological Survey. </p>
Preliminary Results of Marine Gravity Anomaly and Bathymetry from SWOT Wide-Swath altimeter data
<p><span>We explore the potential of Ka-band radar interferometry (KaRIn) data from the SWOT mission for marine gravity and bathymetry applications. Our evaluation includes determining the deflection of vertical (DOV) using the least squares collocation (LSC) method, recovering gravity anomalies with the inverse Vening-Meinesz (IVM) approach, and predicting bathymetry through the gravity-geological method (GGM). SWOT-derived gravity anomalies in the study area, located between 20ºN - 30ºN and 135ºE - 145ºE, lies at the convergence of the Pacific and Eurasian tectonic plates. KaRIn data (only seven months) recovered gravity anomalies with an accuracy of 2.37 mGal, which is better than current models.</span></p> <p><span>The details of the method are discussed in a manuscript submitted to GRL.</span></p> <p> </p>
Gravity Anomalies and Implications for Shallow Mantle Processes of the Western Cocos-Nazca Spreading Center
<p>This folder contains six grid files and one Matlab code from Zheng et al. (2022). </p> <p><br> (1)105W95W1S5N_mba.grd -- mantle Bougour anomaly calculated in this study (displayed in Fig. 1c).</p> <p>(2)105W95W1S5N_mba_ship_topo_global_FAA.grd -- Calculated mantle Bougour anomaly using mutltibeam bathymetry and global free air anomaly data (displayed in Fig. S1b).</p> <p>(3)105W95W1S5N_mba_global_topo_global_FAA.grd -- Calculated mantle Bougour anomaly using global bathymetry and global free air anomaly data (displayed in Fig. S1c).</p> <p>(4)105W95W1S5N_thermal_1k.grd -- thermal effect caused by plate cooling (displayed in Fig. S2b).</p> <p>(5)105W95W1S5N_rmba_1k.grd -- residual mantle Bougour anomaly (displayed in Fig. 2a).</p> <p>(6)105W95W1S5N_crust_1k.grd -- relative crustal thickness (displayed in Fig. 2b).</p> <p>(7)fig4_filtered_model.m -- Matlab code for producing filtered model in Fig. 4 </p>
Synthetic basement depth, gravity anomalies, density and observation points training dataset to train deep learning model
<p>Contains 200000 training data for our DNN model.</p>
IceBridge Sander AIRGrav L1B Geolocated Free Air Gravity Anomalies V002
This data set contains gravity measurements, including acceleration data in three orthogonal directions, from the Sander Geophysics AIRGrav airborne gravity system. Gravity data include latitude and Eotvos-corrected values, as well as free air correction at various along-flight-line time filtering scales. The data were collected as part of Operation IceBridge funded campaigns.
IceBridge LDEO Gravimeter Suite L1B Geolocated Free Air Gravity Anomalies V001
This data set contains gravity measurements taken over Greenland and Antarctica by the Lamont-Doherty Earth Observatory (LDEO) Gravimeter Suite. The data were collected as part of Operation IceBridge funded campaigns.
IceBridge-Related Sander AIRGrav L1B Geolocated Free Air Gravity Anomalies V001
This data set contains Greenland and Antarctica gravity measurements taken from the Sander Geophysics AIRGrav airborne gravity system.
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