This paper explores strong indirect evidence for existence of a previously unrecognized deep groundwater aquifer in southern Quintana Roo, adjacent parts Campeche, and (probably) northern Belize. The region contains rocks Cretaceous-to-Holocene age, including: 1) an up-thrust block the late Cretaceous carbonate known Belize as Barton Creek Formation, which is oldest formation exposed Mexican Yu...

In this paper, we investigate the penetration capabilities of microwaves, particularly at L-band, for the mapping of subsurface heterogeneities such as lithology variations, moisture or sedimentary structures. The experiment site, the Pyla Dune, is a bare sandy area allowing high signal penetration and presenting large subsurface structures (paleosoils) at varying depths. Several radar data set...

This paper reviews groundwater research studies with emphasis on modeling as a tool for management of Hawaii’s resources. Hawaii depends to a great extent on groundwater resources, and concern over availability of potable water has guided research regarding both water quantity and quality. Research is mainly aimed at understanding Hawaii hydrogeology, identifying aquifer parameters and modeling...

Introduction Since the advent of the Internet era and the World Wide Web, teaching and learning has no doubt become easier and resources more accessible. Currently, there is a wealth of useful information freely available online for teaching and learning hydrogeology and groundwater modeling. However, few are as well designed and visually compelling as an educational digital library (DL) called...

Development and applications of isotope methodologies in hydrology have been an integral part of the program component of the IAEA over the last three decades, within the framework of its overall activities related to peaceful nuclear applications. The use of environmental isotopes as a means of tracing water movement in the hydrology including surface and ground water is much of the Agency's w...