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Now showing items 11-20 of 42
Adaptive observations : idealized sampling strategies for improving numerical weather prediction
(Massachusetts Institute of Technology, 1999)
The purpose of adaptive observations is to use information about individual atmospheric situations to identify regions where additional observations are likely to improve weather forecasts of interest. The observation ...
Effects of the chaotic behavior of a superposition of waves in the flux across a channel
(Massachusetts Institute of Technology, 1999)
Several numerical experiments were carried out to study the effects of chaotic behavior on the net tracer flux across a channel. The flow is given by a superposition of two propagating waves. The domain was set up so that ...
Variable grid finite-difference modeling including surface topography
(Massachusetts Institute of Technology, 1999)
We have developed a two-dimensional viscoelastic finite-difference modeling method for highly complex surface topography and subsurface structures. Realistic modeling of seismic wave propagation in the near surface region ...
Terminal proterozoic carbonate platform development : stratigraphy and sedimentology of the Kuibis Subgroup (ca. 550-548 Ma), Northern Nama Basin, Namibia.
(Massachusetts Institute of Technology, 1999)
Western South Atlantic holocene and glacial deepwater hydrography derived from benthic foraminiferal Cd/Ca and stable carbon isotope data
(Massachusetts Institute of Technology, 1999)
Today, deep waters produced in the North Atlantic are exported through the western South Atlantic. Antarctic intermediate water (AAIW) also enters the Atlantic in this region. Circumpolar deep water (CDW) fills the depths ...
Elastic properties of sedimentary anisotropic rocks : (measurements and applications)
(Massachusetts Institute of Technology, 1999)
In-situ permeability estimation : a comparison between acoustic and NMR logs
(Massachusetts Institute of Technology, 1999)
The estimation of formation permeability from full waveform acoustic and nuclear magnetic resonance (NMR) logs in petroleum well logging has improved significantly in recent years. In this thesis, we review the methods of ...
Diagnosis of physical and biological controls on phytoplankton distribution in the Gulf of Maine-Georges Bank region
(Massachusetts Institute of Technology, 1999)
The linkage between physics and biology is studied by applying a one-dimensional model and a two-dimensional model to the Sargasso Sea and the Gulf of Maine- Georges Bank region, respectively. The first model investigates ...
Relative sea-level rise and the development of channel-fill and shallow-water sequences on Cape Cod, Massachusetts
(Massachusetts Institute of Technology, 1999)
The thermal and metamorphic evolution of mountain belts as a response to erosion, accretion, and radiogenic heating
(Massachusetts Institute of Technology, 1999)
Simple thermal models of collisional orogenesis generally predict metamorphic temperatures that are much cooler than those revealed by thermo barometric studies of real metamorphic terrains. This thesis focuses on a more ...