Fluid-Rock Characterization and Interactions in NMR Well Logging (open access)

Fluid-Rock Characterization and Interactions in NMR Well Logging

The objective of this project was to characterize the fluid properties and fluid-rock interactions which are needed for formation evaluation by NMR well logging. NMR well logging is finding wide use in formation evaluation. The formation parameters commonly estimated were porosity, permeability, and capillary bound water. Special cases include estimation of oil viscosity, residual oil saturation, location of oil/water contact, and interpretation on whether the hydrocarbon is oil or gas.
Date: February 10, 2003
Creator: Hirasaki, George J. & Mohanty, Kishore K.
System: The UNT Digital Library
Impact of Long-Range Dust Transport on Northern California in Spring 2002 (open access)

Impact of Long-Range Dust Transport on Northern California in Spring 2002

It has been well documented that spectacular dust storms in Asia (e.g. the events in 1998 and 2001) can affect the USA through long-range transport of dust across the Pacific. However, our observations and modeling show that the majority of dust at sites in Lassen National Park and Trinity Alps (Northern California) in spring 2002 (a year with no spectacular Asian dust events) is still from long-range intercontinental transport across the Pacific. We implemented the interactive dust emission algorithm of Ginoux et al. (2004) into the LLNL 3-D global atmospheric chemistry and aerosol transport model (IMPACT), then ran the model using a separate tracer for each dust emission region, using hi-resolution (1 x 1 degree) meteorological data from the NASA GMAO GEOS-3 assimilation system for 2001 and 2002. We also experimentally analyzed size- and time-resolved aerosol samples at Lassen National Park and Trinity Alps in the spring of 2002, which were taken as part of NOAA's ITCT 2k2 measurement campaign. The model-predicted time-series of soil dust over Northern California agrees remarkably well with our measurements, with a strong temporal correlation between the observations and intercontinental transport of dust across the Pacific in the model. Hence, we conclude that the majority …
Date: February 10, 2005
Creator: Cameron-Smith, P.; Bergmann, D.; Chuang, C.; Bench, G.; Cliff, S.; Kelly, P. et al.
System: The UNT Digital Library
Indian Ocean Earthquake and Tsunami: Humanitarian Assistance and Relief Operations (open access)

Indian Ocean Earthquake and Tsunami: Humanitarian Assistance and Relief Operations

On December 26, 2004, a magnitude 9.0 undersea earthquake off the west coast of northern Sumatra, Indonesia, unleashed a tsunami that affected more than 12 countries throughout south and southeast Asia and stretched as far as the northeastern African coast. Current official estimates indicate that more than 160,000 people are dead and millions of others are affected, including those injured, missing, or displaced, making this the deadliest tsunami on record. News reports suggest that the death toll may be well above 200,000. Sections of Indonesia, Sri Lanka, India, and Thailand have suffered the worst devastation. Eighteen Americans are confirmed dead, with another sixteen presumed dead, and 153 remain unaccounted for.
Date: February 10, 2005
Creator: Margesson, Rhoda
System: The UNT Digital Library