Energy balance

Energy balance paper figur

The effects of deformation energetics in Long-term tectonics modeling

<div>This file bundle includes the figures as well as the benchmark and the plotting scripts of the newly derived Full energy balance equation for Long-term tectonic modeling. All the figures and scripts are made for the manuscript entitled as "Incorporating Deformation Energetics in Long-Term Tectonic Modeling". </div><div><br></div><div>First four figures are associated to the three benchmarks, where we compared the semi-analytic solution of the full energy balance equation with the numerical solutions from DES3D, an unstructured finite element solver for long-term tectonic deformation. </div><div><br></div><div>Rest of the figures represents the five models of the evolution of large offset normal fault. In these figures, we systematically explore the impact of the temperature arises from the full energy balance equation.</div

Coupling long-term tectonic loading and short-term earthquake slip.

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Arial; -webkit-text-stroke: #000000} span.s1 {font-kerning: none} <p>Initiation, propagation, and termination of an earthquake rupture are highly sensitive to initial stress conditions. However, due to the difficulty of determining stresses, in-situ many studies have considered only uniform regional stresses without trying to estimate and include a realistic pre-stress constrained by a regional stress state. A geodynamic model can solve this issue of constraining initial stresses for a large region with great depth. A regional geodynamic model can include a fault zone, which can spontaneously form from a pre-defined one in the model. In this work, we show a rupture simulation on 2D large offset normal fault. </p

Basement surface interaction in north-west Bengal Basin

The northwest Bengal Basin is one of the least explored areas where the basement surface interaction is still controversial. We analyze satellite images, bouguer anomaly data and construct a long-term tectonic model. Satellite images reveal significant spatial changes in the uplifted Barind tract and its surrounding low-lying subsided floodplains. The regional and residual gravity anomalies exhibit an association with the surface geologic structures. For example, the uplifted Barind tract areas are located on top of the gravity highs represent crustal horst. On the other hand, low-lying flood plains and faults are located on the gravity lows represent graben. To explore the relationship between the surface and basement structures, we construct a geodynamic model. We find that the model produces conjugate thrust faults beneath the horst.  With time the faults reach the surface and push the horst block upward. We do not see such noticeable upliftment in the graben structures. Finally, we conclude that the uplifted surface structures and the surrounding low-lying flood plains may be produced by the regional compression and have a relationship with existing basement structures