Gravity surveys are an important research topic in geophysics and geodynamics. This paper investigates a method for high accuracy large scale gravity anomaly data reconstruction. Based on the airborne gravimetry technology, a flight test was carried out in China with the strap-down airborne gravimeter (SGA-WZ) developed by the Laboratory of Inertial Technology of the National University of Defe...

In this work, an investigation was made of the modification of film surface of Poly(methylmethacrylate) (PMMA) using the plasma polymerization technique. PMMA films 10 μm thick were obtained by Spin-Coating starting from a chloroform solution (15.36% w/w). The films were exposed to the plasma of CHF 3 at different gas pressures and exposure times to increase the thickness of fluorinated polymer...

We propose an improved fast local level set method for the inverse problem of gravimetry by developing two novel algorithms: one is of linear complexity designed for computing the Frechet derivative of the nonlinear domain inverse problem, and the other is designed for carrying out numerical continuation rapidly so as to obtain fictitious full measurement data from partial measurement. Since th...

Abstract Glacial lakes are increasing in number and extent under a warming climate. Despite demand for lake monitoring understanding outburst mechanisms, studies of large events sparse. Here we report an Lago Greve, proglacial Chilean Patagonia. During the event April–July 2020, level dropped by 18.3 ± 1.2 m area decreased 14.5 0.02 km 2 . The total water discharge was 3.7 0.2 3 , which is one ...

To mitigate temporal aliasing effects in monthly-mean global gravity fields from the GRACE and GRACE-FO satellite tandem missions, both tidal non-tidal background models describing high-frequency mass variability atmosphere oceans are needed. quantify tides atmosphere, we exploit higher spatial (31 km) (1 h) resolution provided by latest atmospheric ECMWF reanalysis, ERA5. The oceanic response ...

In March 2015, a ground vehicle gravimetry test was implemented in eastern Changsha to assess the repeatability and accuracy of ground vehicle SINS/GNSS gravimeter-SGA-WZ02. The gravity system developed by NUDT consisted of a Strapdown Inertial Navigation System (SINS), a Global Navigation Satellite System (GNSS) remote station on test vehicle, a GNSS static master station on the ground, and a ...