Surface sediment data, CaCO3 and TOC

Modern sedimentary total organic carbon (TOC) content as a proxy for surface water export production was mapped on the shelf and on the upper continental slope of the Benguela upwelling system using 137 core tops. Shelf maxima in TOC can be correlated with maxima in surface water productivity. On the slope, high TOC contents are observed offshore from sites of strong modern upwelling. Estimates of modern TOC mass accumulation rates (MAR) show that approximately 85% of the total is accumulating on the shelf. TOC MAR were calculated, mapped, and budgeted for the Holocene and for the Last Glacial Maximum (LGM) using 19 sediment cores from the continental slope. During the LGM, centers of deposition and production have migrated offshore with respect to their Holocene positions. TOC accumulation on the continental slope was approximately 84% higher during the LGM than during the Holocene, possibly reflecting enhanced productivity. The TOC distribution patterns and sediment echo sounding data suggest that undercurrents strongly influence the sedimentation off Namibia. Winnowing and focusing result in great lateral heterogeneity of sedimentation rates and sediment properties. Individual cores therefore do not necessarily reflect general changes in export production. These results highlight the need for detailed regional studies based on a large number of sediment cores for highly heterogeneous high-productivity areas in order to derive general statements on total fluxes.

Annotated record of the detailed examination of Mn deposits from R/V Tokaidaigaku Maru II Cruise GDP-11 stations

The eleventh research cruise of Japanese Geodynamics Project in the West Pacific was carried out by the R/V Tokaidaigaku-maru II in August, 1974. During this cruise, in which the authors participated, many traverses of echo sounding and seismic reflection profiling and frequent sampling of bottom sediments were undertaken.

Particulate concentrations and vertical fluxes of sedimentary material and chemical elements, composition of particulate and sinking material in the water column of the Bear Island Trough, Norwegian Sea, July 1995

CTD and nephelometric sounding data are considered along with parameters of the near-bottom currents and particulate fluxes measured by a subsurface mooring station in the northern part of the Bear Island Trough. It is shown that the near-bottom current is characterized by highly variable parameters, while distribution of suspended particulate matter demonstrates surface and bottom maxima. Horizontal and vertical fluxes of sedimentary material in the nepheloid layer are studied.

Ion propulsion for spacecraft.

Includes bibliographical references.

Releasable data on United States Air Force aerospace vehicles.

1964 ed. published under title: Releasable data on USAF aerospace vehicles.

Sea-floor deposits from soundings,

Mode of access: Internet.

Environmental safety aspects of nuclear rocket flight operations : annual progress report : for Space Nuclear Propulsion Office, Atomic Energy Commission, National Aeronautics and Space Administration.

"Contract SNPC-6".

Computer data processing system : project ROVER /

"Contract W-7405-ENG.36 with the U.S. Atomic Energy Commission."

Solid propellant processing factors in rocket motor design.

At head of title: NASA space vehicle design criteria (chemical propulsion).

Rocket science and missile engineering.

Mode of access: Internet.

Liquid rocket actuators and operators

Cover title.

Solid rocket thrust vector control.

Cover title.

Solid rocket motor nozzles /

"...written by Russell A. Ellis."

Liquid rocket engine nozzles /

Cover title.

Magnetic plasma propulsion by means of a travelling sinusoidal field.

"STL/TR-60-0000-09114."