New seafloor mapping and sampling demonstrates that the eruption of the high-Ca boninites is clearly associated with rifting of the northern Tonga ridge and the northern Lau Basin at the northern termination of the Tonga Trench. There is very strong evidence for OIB plume related mantle sources involved in the...
This report documents the various subroutines in general use by the Oregon
State University Geophysics group. Included are subroutines for plotting
and date and time conversion and arithmetic functions and control
functions.
We used data from Cascadia Initiative and Blanco Transform Fault Zone array of ocean bottom seismometers and hydrophone to look at the seismicity and specially depth of the Central Cascadia Continental Margin events. Events were detected and located automatically with Antelope software package (Boulder Real Time Technologies). We looked at...
Despite extensive research on the historical and technical aspects of national space policy, little has attempted to understand the links between technological evolution in NASA’s spaceflight program in relation to its administrative, political and economic context. This essay explores these connections in the development and evolution of core systems in...
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2.1. Overview of NASA and the U.S. Human Spaceflight Program
The displacement of the free liquid surface in geothermal and
hydrologic reservoirs is an important capacitance factor. An
iterative approach to determining the drawdown of the free liquid
surface for a single sink region in a homogeneous, isotropic, Darcy-type
porous mediums is discussed. The iterative approach involves a
stepwise adjustment...
Gravity and magnetic data from cruises by the R/V Yaquina in 1973
and the R/V Wecoma in 1975 provide new data that make possible the construction of a map of the free-air gravity anomalies at sea and simple
Bouguer anomalies on lano in Panama, western Colombia, and the eastern
Panama...
Development of marine heat waves (MHWs) in the Chile-Peru Current System (CPCS) is influenced by multiple physical processes at the air-sea interface whose individual role in these destructive events is difficult to infer. We identified MHW events from sea surface temperature (SST) anomalies from time periods of extreme ocean warming...
Headwater streams are an integral part of the ecological health of the greater stream network as they provide valuable biological habitat, provide upwards to 95% of total in channel flow, while providing downstream reaches with important constituents such as sediment and woody debris. Small headwater streams are particularly susceptible to...
Gravity observations were made with the LaCoste-Romberg underwater
gravity meter during July and August 1962 at 149 stations
in an area 10 by 40 miles (44°10' to 44°50'N latitude and 124°
07' to 124°20'W longitude) off the north-central Oregon coast
from Heceta Head to Depoe Bay. The primary purpose of...