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A deep-sea thermohaline flow path in the northwest Pacific
OLR (1985)32 (12)
F. General
policy possibly being 'worse than having undertaken no study at all.' NCAR, P.O. Box 3000, Boulder, CO 80307, USA. (fcs)
F330. History of science (especially oceanography) 85:7368 Gross, P.R. et al., 1985. The Naples Zoological Station and the Marine Biological Laboratory: one hundred years of biology. Symposium, Ischia, Italy, October, 1984. Biol. Bull. mar. biol. Lab., Woods Hole, 168(3)(suppl.):l-204; 23 papers. In October 1984, a group of science historians and biologists met on the Island of Ischia, Italy, to commemorate and celebrate 100 years of science at the Naples Zoological Station in Italy and the Marine Biological Laboratory in Woods Hole, Massachusetts. Personalities (Dohrn, Agassiz, Whitman, etc.), origin of the institutes, struggles over missions and money, and comparisons among science laboratories are discussed as are important contributions from model systems (cephalopods, fruit flies, sea urchins) and the evolution of disciplines (embryology, cell biology, comparative physiology, neuroscience, etc.). MBL, Woods Hole, MA 02543, USA. (msg)
F370. Multidisciplinary scientific studies (general interest) 85:7369 Enting, I.G., 1985. A lattice statistics model for the age distribution of air bubbles in polar ice. Nature, Lond., 315(6021):654-655. It is necessary to consider the time delay between the deposition of the original snow and the bubble trapping and also the distribution of trapping times over several decades. The percolation model from lattice statistics describes the static geometrical aspects of trapping and reproduces various aspects of recent observations. Observations of large seasonal fluctuations in trapped bubble volume reflect the enhanced susceptibility to perturbations near the percolation transition. The critical exponent of the percolation probability largely determines the stability of the deconvolution of observed concentrations, indicating that the bubble deconvolution problem is less poorly posed than typical geochemical source deduction problems. CSIRO, Div. of Atmos. Res., Private Bag l, Mordialloc, Vict. 3195, Australia.
1059
85:7370 Hoffman, Antoni, 1985. Patterns of family extinction depend on definition and geological timescale. Nature, Lond., 315(6021):659-662. The evidence for an approximate 26-Myr periodicity in the pattern of mass species extinction over the past 250 Myr is strongly contingent on arbitrary decisions concerning the absolute dating of stratigraphical boundaries, the culling of the database, and the definition of what is mass extinction as opposed to background extinction. This evidence becomes insufficient under other plausible geological timescales and other acceptable definitions of mass extinction. Analysis of the non-culled database shows that the reliability of identification of mass extinctions and their timing is at present extremely limited, and that the apparent periodicity of mass extinctions results from stochastic processes. Lamont-Doherty Geol. Observ., Palisades, NY 10964, USA. 85:7371 Mammerickx, J., 1985. A deep-sea thermohaline flow path in the northwest Pacific. Mar. Geol., 65(12):1-19. Geological evidence for a 2000 km long, north-south flow path east of the Emperor Seamounts is offered; evidence is similar to that associated elsewhere with thermohaline currents. As there are no present-day physical oceanographic observations of a northsouth flowing thermohaline current, the inferred bottom current is either presently inactive or has not been detected as yet. Scripps Inst. of Oceanogr., La Jolla, CA 92093, USA. 85:7372 Schenck, P.A., J.W. de Leeuw and G.W.M. Lijmbach (eds.), 1984. Advances in organic geochemistry 1983. Proceedings of the l lth International Meeting on Organic Geochemistry, Netherlands, September 1983. Org. Geochem., 6:1-891; 91 papers. Symposium papers are divided into sections on biomarkers, porphyrins, recent sediments and particulate matter, kerogen, coal, petroleum and gas and miscellaneous. Among the papers concerning marine environments were discussions of diterpenoids from a Labrador Sea well, long chain unsaturated ketones and esters in living algae and sediments, lipid flux and particulate matter in the Peru upwelling region, fatty acids from EPR hydrothermal environments, sedimentary hydrocarbons from a delta and a subtropical marine estuary, total organic matter characterization of a marine sediment, and Jurassic and mid-Cretaceous carbonaceous claystones in the
F. General
policy possibly being 'worse than having undertaken no study at all.' NCAR, P.O. Box 3000, Boulder, CO 80307, USA. (fcs)
F330. History of science (especially oceanography) 85:7368 Gross, P.R. et al., 1985. The Naples Zoological Station and the Marine Biological Laboratory: one hundred years of biology. Symposium, Ischia, Italy, October, 1984. Biol. Bull. mar. biol. Lab., Woods Hole, 168(3)(suppl.):l-204; 23 papers. In October 1984, a group of science historians and biologists met on the Island of Ischia, Italy, to commemorate and celebrate 100 years of science at the Naples Zoological Station in Italy and the Marine Biological Laboratory in Woods Hole, Massachusetts. Personalities (Dohrn, Agassiz, Whitman, etc.), origin of the institutes, struggles over missions and money, and comparisons among science laboratories are discussed as are important contributions from model systems (cephalopods, fruit flies, sea urchins) and the evolution of disciplines (embryology, cell biology, comparative physiology, neuroscience, etc.). MBL, Woods Hole, MA 02543, USA. (msg)
F370. Multidisciplinary scientific studies (general interest) 85:7369 Enting, I.G., 1985. A lattice statistics model for the age distribution of air bubbles in polar ice. Nature, Lond., 315(6021):654-655. It is necessary to consider the time delay between the deposition of the original snow and the bubble trapping and also the distribution of trapping times over several decades. The percolation model from lattice statistics describes the static geometrical aspects of trapping and reproduces various aspects of recent observations. Observations of large seasonal fluctuations in trapped bubble volume reflect the enhanced susceptibility to perturbations near the percolation transition. The critical exponent of the percolation probability largely determines the stability of the deconvolution of observed concentrations, indicating that the bubble deconvolution problem is less poorly posed than typical geochemical source deduction problems. CSIRO, Div. of Atmos. Res., Private Bag l, Mordialloc, Vict. 3195, Australia.
1059
85:7370 Hoffman, Antoni, 1985. Patterns of family extinction depend on definition and geological timescale. Nature, Lond., 315(6021):659-662. The evidence for an approximate 26-Myr periodicity in the pattern of mass species extinction over the past 250 Myr is strongly contingent on arbitrary decisions concerning the absolute dating of stratigraphical boundaries, the culling of the database, and the definition of what is mass extinction as opposed to background extinction. This evidence becomes insufficient under other plausible geological timescales and other acceptable definitions of mass extinction. Analysis of the non-culled database shows that the reliability of identification of mass extinctions and their timing is at present extremely limited, and that the apparent periodicity of mass extinctions results from stochastic processes. Lamont-Doherty Geol. Observ., Palisades, NY 10964, USA. 85:7371 Mammerickx, J., 1985. A deep-sea thermohaline flow path in the northwest Pacific. Mar. Geol., 65(12):1-19. Geological evidence for a 2000 km long, north-south flow path east of the Emperor Seamounts is offered; evidence is similar to that associated elsewhere with thermohaline currents. As there are no present-day physical oceanographic observations of a northsouth flowing thermohaline current, the inferred bottom current is either presently inactive or has not been detected as yet. Scripps Inst. of Oceanogr., La Jolla, CA 92093, USA. 85:7372 Schenck, P.A., J.W. de Leeuw and G.W.M. Lijmbach (eds.), 1984. Advances in organic geochemistry 1983. Proceedings of the l lth International Meeting on Organic Geochemistry, Netherlands, September 1983. Org. Geochem., 6:1-891; 91 papers. Symposium papers are divided into sections on biomarkers, porphyrins, recent sediments and particulate matter, kerogen, coal, petroleum and gas and miscellaneous. Among the papers concerning marine environments were discussions of diterpenoids from a Labrador Sea well, long chain unsaturated ketones and esters in living algae and sediments, lipid flux and particulate matter in the Peru upwelling region, fatty acids from EPR hydrothermal environments, sedimentary hydrocarbons from a delta and a subtropical marine estuary, total organic matter characterization of a marine sediment, and Jurassic and mid-Cretaceous carbonaceous claystones in the