Exploring the abyss
- Ocean bottom is most crowded place on earth. Vetter, Eric W. // Current Science;3/31/95, Vol. 80 Issue 15, p15
States that the ocean bottom is the most crowded place on the earth. Population density figures of the crustaceans living underwater; Other information about them.
- Vast Neogene laminated diatom mat deposits from the eastern equatorial Pacific Ocean. Kemp, Alan E.S.; Baldauf, Jack G. // Nature;3/11/1993, Vol. 362 Issue 6416, p141
Reports evidence, from several sediment cores in the eastern equatorial Pacific upwelling region, for repeated episodes of increased equatorial primary production between 15 and 4.4 million years ago, on a scale that is undocumented in the modern ocean. Location map; Core photo showing a rare,...
- A 6,000-year sedimentary molecular record of chemocline excursions in the Black Sea. Damste, Jaap S. Sinning; Wakeham, Stuart G. // Nature;4/29/1993, Vol. 362 Issue 6423, p827
Reports the distributions of sequestered photosynthetic pigments in eight core samples of sediments from the Black Sea ranging in age from zero to 6,200 years before the present. The results show that photosynthetic green sulfur bacteria have been active in the Black Sea for substantial periods...
- Flattening of the sea-floor depth-age curve as a response to asthenospheric flow. Morgan, Jason Phipps; Smith, Walter H.F. // Nature;10/8/1992, Vol. 359 Issue 6395, p524
Suggests that the flattening of the old ocean floors can perhaps be best explained as a dynamic phenomenon reflecting flow in asthenosphere underlying the oceanic lithosphere. Application of this model to the Pacific plate; This model's ability to also explain the asymmetric subsidence of the...
- Oceans of change. Kump, Lee // Nature;2/18/1993, Vol. 361 Issue 6413, p592
Comments on a study by Froelich et al which finds that sedimentary germanium/silicon ratios of sediments deposited on the sea floor have recorded changes in the nature of chemical weathering on the continents during the ice ages. An earlier study by Dia et al of strontium isotope ratios...
- Anonmalously cold temperatures observed at the base of the gas hydrate stability zone on the U.S.... Ruppel, Carolyn // Geology;Aug97, Vol. 25 Issue 8, p699
Provides information on the results of a study on depths below sea floor in methane hydrate on the United States Atlantic passive margin. Information on the measurements of the depths; Temperatures of the depth indicated by bottom simulating reflector (BSR); Conclusion reached.
- Britain wins bid to host ocean drilling office. Dickson, David // Nature;2/25/1993, Vol. 361 Issue 6414, p674
Reports that British marine geophysicists are rejoicing over the successful bid by the University of Wales, Cardiff, and the Natural Environment Research Council to be the first non-US host of the science planning office of the international ocean-drilling program (ODP). The National Science...
- Origins of marginal basins. Silver, E.; Rangin, C. // Nature;3/30/1989, Vol. 338 Issue 6214, p380
Presents a report from the Leg 124 shipboard scientific party in the western Pacific Ocean. Compositions of marginal basins.
- Deep thoughts on the mantle. Langmuir, Charles H. // Nature;7/15/1993, Vol. 364 Issue 6434, p191
Presents views on the study by Eric Humler et al in `Nature,' volume 364, July 15, 1993 issue. Linkage between ocean ridge compositions and the velocity anomalies deduced from seismic tomography; Evaluation of temperature beneath ocean ridges; Controversies from petrological and seismic dtata sets.