Surface CO2leakage during two shallow subsurface CO2releases

Surface-to-subsurface velocity projection for shallow water currents

Sea surface currents in coastal oceans are accessible to continuous direct observations by shore-based high-frequency Doppler radar systems. Inferring current structure in shallow water from such surface current observations is attempted. The approach assumes frictionally dominated flow and vertically varying current velocity on the scale of the Ekman boundary layer. The approximation of the ve...

Invasive Surface and Subsurface Data

High beta diversity of bacteria in the shallow terrestrial subsurface.

While there have been a vast number of studies on bacterial alpha diversity in the shallow terrestrial subsurface, beta diversity - how the bacterial community composition changes with spatial distance - has received surprisingly limited attention. Here, bacterial beta diversity and its controlling factors are investigated by denaturing gradient gel electrophoresis and cloning of samples from a...

The Mars Advanced Radar and Lidar Orbiter (marlo) for High-resolution Investigations of Global Topography, Surface Roughness, Subsurface Volatiles, Stratigraphy and Structure within the Shallow- and Deep-subsurface

INVESTIGATIONS OF GLOBAL TOPOGRAPHY, SURFACE ROUGHNESS, SUBSURFACE VOLATILES, STRATIGRAPHY AND STRUCTURE WITHIN THE SHALLOWAND DEEP-SUBSURFACE. S. M. Clifford, W. A. Delamere, S. Gogineni, W. Kofman, A. Herique, P. Spudis, B. Sharpton, R. Orosei, E. Stofan, V. Ciarletti, E. Heggy, D. Plettemeier, D. Smith, M. Zuber. Lunar and Planetary Institute, 3600 Bay Area Blvd, Houston, TX 77058 (clifford@...

Rough Surface Estimation for Subsurface Imaging

In this paper a distance measurement based reflection point terrain estimation method (RPTEM) for characterizing two-dimensional (2-D) rough surfaces is presented. The method is based on the analysis of timedomain field data obtained by GPR system with Synthetic Aperture Radar (SAR) scan over 2-D rough ground surfaces. The distance from each antenna position to the ground surface is established...