Surface-wave methods are widely used in earth sciences and engineering for the geometric characterization of geological bodies and tectonic structures of the subsurface. These techniques exploit the dispersive nature of Rayleigh waves to indirectly estimate shear wave velocity profiles from surface-wave measurements; however, they are limited to parallel-layered geometries. To overcome such lim...

Structure and composition of coastal forested wetlands are mainly controlled by local topography and soil salinity. Hydrology plays a major role in relation with tides, seaward, and freshwater inputs, landward. We report here the results of a two-year study undertaken in a coastal plain of the Guadeloupe archipelago (FWI). As elsewhere in the Caribbean islands, the study area is characterized b...

To effectively overcome the cycle-skipping issue in full-waveform inversion (FWI), we have developed a deep neural network (DNN) approach to predict absent low-frequency (LF) components by exploiting hidden physical relation connecting LF and high-frequency (HF) data. efficiently solve this challenging nonlinear regression problem, two novel strategies are proposed design DNN architecture optim...

SUMMARY 2-D full-waveform inversion (FWI) of shallow-seismic Rayleigh waves has become a powerful method for reconstructing viscoelastic multiparameter models shallow subsurface with high resolution. The reconstruction in FWI is challenging due to the potential presence cross-talk between different parameters and unbalanced sensitivity Rayleigh-wave data respect parameter classes. Accounting in...

Abstract. This paper proposes a new method that combines checkpointing methods with error-controlled lossy compression for large-scale high-performance full-waveform inversion (FWI), an inverse problem commonly used in geophysical exploration. combination can significantly reduce data movement, allowing reduction run time as well peak memory. In the exascale computing era, frequent transfer (e....

Detailed reconstruction of deep structures with full-waveform inversion (FWI) wide-angle ocean-bottom seismometer (OBS) data remains challenging and unconventional. The complexity the long-offset waveforms increases nonlinearity inverse problem, while sparsity OBS deployments leads to a poorly constrained model reconstruction. Consequently, for such FWI setting it is difficult derive an initial...

The length of the fire season has not garnered much attention within broad field meteorological research on regime change. Fire weather Iberian Peninsula is no exception in this case; there solid understanding lengthening Portugal, although recent decades do suggest ongoing transitions. Based a complete record occurrence and burned area between 1980 2018, we first searched for consistent trends...

• Energy conservation equation in integral form has been derived from first principles. Validity is demonstrated for flame wall interaction (FWI) a turbulent boundary layer. Wall heat transfer during FWI intrinsically related to the burning velocity. An of energy principle low Mach number conditions statistically steady premixed flame-wall within layers. The validity this based on three-dimensi...

Structure and composition of coastal forested wetlands are mainly controlled by local topography and soil salinity. Hydrology plays a major role in relation with tides, seaward, and freshwater inputs, landward. We report here the results of a two-year study undertaken in a coastal plain of the Guadeloupe archipelago (FWI). As elsewhere in the Caribbean islands, the study area is characterized b...