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  • Other Sources  (184)
  • Springer  (109)
  • Elsevier  (75)
  • American Physical Society
  • 1985-1989  (184)
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Source
Keywords
Publisher
Years
Year
  • 1
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    Stress Analysis by Boundary Element Methods (1989)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 3, pp. 6322, (ISBN 0-521-79203-7)
    Details
    Publication Date: 1989
    Keywords: Textbook of physics ; Textbook of geophysics ; Stress ; Boundary Element Method
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Induction Logging (1989)
    Elsevier
    In:  Amsterdam, 652 pp., Elsevier, vol. 39, no. XVI:, pp. 227-235, (0-444-51955-6)
    Details
    Publication Date: 1989
    Keywords: Borehole geophys. ; Textbook of geophysics ; Dual Induction Latero log
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Orthonormal Wavelets (1989)
    Springer
    In:  Bull., Polar Proj. OP-O3A4, Wavelets: Time-Frequency Methods and Phase, Berlin, Springer, vol. 22, no. 4, pp. 21-37, (ISBN 0080419208)
    Details
    Publication Date: 1989
    Keywords: Wavelet processing ; Textbook of geophysics ; Spectrum ; Data analysis / ~ processing ; noksp
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Application of Fracture Mechanics to Composite Materials (1989)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 6, no. 16, pp. 220, (ISBN: 3540148477)
    Details
    Publication Date: 1989
    Keywords: Fracture ; Rock mechanics ; Elasticity
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Proceedings of the International Workshop on the Interdisciplinary Role of Space Geodesy (1989)
    Springer
    In:  Berlin, Springer, vol. 7, no. 1, pp. 443-487, (ISBN 0-89871-560-1)
    Details
    Publication Date: 1989
    Keywords: Geodesy ; Muller
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    Gravity and Low-Frequency Geodynamics (1989)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 65, no. ALEX(01)-FR-77-01, AFTAC Contract F08606-76-C-0025, pp. 95-104, (ISBN: 0-08-044051-7)
    Details
    Publication Date: 1989
    Keywords: Textbook of geophysics ; Gravimetry, Gravitation ; Crustal deformation (cf. Earthquake precursor: deformation or strain)
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    BIBLIOGRAPHY SEISMOLOGY
  • 7
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    The Geological Framework of the KTB Drill Site (1989)
    Springer
    In:  Professional Paper, The German Continental Deep Drilling Program (KTB), Site-Section Studies in the Oberpfalz and Schwarzwald, Berlin, Springer, vol. 120, no. 231, pp. 37-54, (ISBN: 3-540-23712-7)
    Details
    Publication Date: 1989
    Keywords: KTB ; Geol. aspects ; Tectonics
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    BIBLIOGRAPHY SEISMOLOGY
  • 8
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    Sediment acoustics (1989)
    Springer
    In:  Bull., Open-File Rept., Lecture Notes in Earth Sciences, Berlin, Springer, vol. 89, no. 1, pp. Paper A 25 - A 34, (ISBN 1-86239-165-3, vi + 330 pp.)
    Details
    Publication Date: 1989
    Keywords: Seismics (controlled source seismology) ; Textbook of geophysics ; Acoustics
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    BIBLIOGRAPHY SEISMOLOGY
  • 9
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    The German Continental Deep Drilling Program (KTB) (1989)
    Springer
    In:  Berlin, Springer, vol. 138, no. 2, pp. 527-553, (ISBN 0-7923-5034-0)
    Details
    Publication Date: 1989
    Keywords: Borehole geophys. ; Tectonics ; Textbook of geophysics ; Geol. aspects ; BO, ; RUB, ; GMG: ; MB ; 4129 ; 3.45.19
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    BIBLIOGRAPHY SEISMOLOGY
  • 10
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    Finite Differenzen und Elemente. Numerische Lösungen von Variationsproblemen und partiellen Differentialgleichungen (1989)
    Springer
    In:  Berlin, Springer, vol. 20, no. 1, pp. 662-664, (ISBN 1-58488-320-0)
    Details
    Publication Date: 1989
    Keywords: Handbook of mathematics ; Finite Element Method ; Finite difference method ; DGL
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    BIBLIOGRAPHY SEISMOLOGY
  • 11
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    The Interdisciplinary Role of Space Geodesy: Proc. of International Workshop held at "Ettore Majorana" Center for Scientific Culture, Erice, Sicily, Italy, July 23-29, 1988 (1989)
    Springer
    In:  Berlin, Springer, vol. 7, no. 1, pp. 443-487, (ISBN 0-89871-560-1)
    Details
    Publication Date: 1989
    Keywords: Proceedings of a conference ; Geodesy ; Plate tectonics ; Muller
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    BIBLIOGRAPHY SEISMOLOGY
  • 12
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    Practical Numerical Algorithms for Chaotic Systems (1989)
    Springer
    In:  Berlin, Springer, vol. 15, no. Publ. No. 12, pp. 585, (ISBN 1-85233-708-7)
    Details
    Publication Date: 1989
    Keywords: Textbook of informatics ; Textbook of mathematics ; Chaotic behaviour
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    BIBLIOGRAPHY SEISMOLOGY
  • 13
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    Elastic Wave Field Extrapolation. Redatuming of Single- and Multi-Component Seismic Data (1989)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 2, no. 1, pp. 1-40, (ISBN 3-7643-6675-3)
    Details
    Publication Date: 1989
    Keywords: Textbook of geophysics ; Seismics (controlled source seismology) ; Applied geophysics ; Data analysis / ~ processing
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    BIBLIOGRAPHY SEISMOLOGY
  • 14
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    The KTB pilot-hole: Tectonic setting, technical data and first results (1989)
    Springer
    In:  Professional Paper, The German Continental Deep Drilling Program (KTB), Site-Selection Studies in the Oberpfalz and Schwarzwald, Berlin, Springer, vol. 9, no. 16, pp. 527-553, (ISBN 1-4020-1729-4)
    Details
    Publication Date: 1989
    Keywords: Borehole geophys. ; KTB ; Tectonics ; Review article ; Geol. aspects
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    BIBLIOGRAPHY SEISMOLOGY
  • 15
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    Oberpfalz Deep Seismic Reflection Survey and Velocity Studies (1989)
    Springer
    In:  Bull., Open-File Rept., The German Continental Deep Drilling Program (KTB), Site-Section Studies in the Oberpfalz and Schwarzwald, Berlin, Springer, vol. 65, no. 16, pp. 99-150, (ISBN 1-86239-165-3, vi + 330 pp.)
    Details
    Publication Date: 1989
    Keywords: KTB ; Deep seismic sounding (espec. cont. crust) ; Tectonics ; Reflection seismics ; Duerbaum ; Durbaum ; Ruehl ; Ruhl ; Meissner
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    BIBLIOGRAPHY SEISMOLOGY
  • 16
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    The influence on catch of monofilament and multifilament netting in otter prawn trawls (1989)
    Elsevier
    In:  Fisheries Research, 8 (1). pp. 35-44.
    Details
    Publication Date: 2017-01-10
    Description: In Moreton Bay, Queensland, the catch obtained using monofilament polyamide (PA) otter trawl-nets with multifilament polyethylene (PE) cod ends was compared with that obtained using multifilament PE trawl-nets of identical mesh opening (38 mm). Monofilament PA otter trawl-nets retained fewer small prawns ( 〈 24 mm carapace length) than conventional multifilament PE nets, but both nets caught similar quantities of larger prawns ( 〉 24 mm carapace length). The higher retention rate of small prawns by multifilament PE gear was reflected in the greater catch weights of Peraeus plebejus, Metapenaeus bennettae and Metapenaeopsis novaeguineae in those nets. Catch weights of larger prawn species such as Penaeus esculentus and Metapenaeus endeavouri did not differ between nets. Winter whiting (Sillago maculata) and squid (Loligo spp.) were trawled in similar abundance in both nets, although the monofilament retained fewer squid 〈 50 mm mantle length. More marketable ( 〉 15 cm carapace width) sand crabs (Portunus pelagicus) were caught in the monofilament net. There was not significant difference in the trash (noncommercial component) weight caught in both nets. Over the range of towing speeds tested (1.7–2.3 kn), use of monofilament nets significantly reduced total gear drag.
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  • 17
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    The diets of five summer breeding seabirds in Adélie Land, Antarctica (1989)
    Springer
    In:  Polar Biology, 9 (3). pp. 137-145.
    Details
    Publication Date: 2020-06-10
    Description: The diets of five breeding seabird species were investigated on Adélie Land in January–February 1982. Stomach contents of Adélie penguins, Pygoscelis adeliae, were sampled by a water off-loading method and of Procellariiformes by spontaneous regurgitation. Diet compositions by mass were: Adélie penguin (79% euphausiid, 18% fish, 3% squid); Cape pigeon, Daption capense, (64% euphausiid, 29% fish, 7% carrion); Antarctic fulmar, Fulmarus glacialoides, (64% euphausiid, 20% carrion, 16% fish); snow petrel, Pagodroma nivea, (95% fish, 2% euphausiid, 1% carrion) and Wilson's stormpetrel, Oceanites oceanicus, (39% fish, 37% euphausiid, 13% carrion, 12% various crustaceans). The present Adélie penguin diet is consistent with those reported in other studies, given our knowledge of geographical variation in food availability. Differences in the diets of fulmarine petrels appear to relate to differences in foraging areas. The snow petrel is a fish-eating bird associated with pack-ice. Cape pigeon and Antarctic fulmar are mainly krill-eaters and we infer segregation along a neritic/oceanic gradient because of the importance of the neritic Euphausia crystallorophias in the former and the oceanic E. superba in the latter.
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  • 18
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    Seabird and fur seal responses to vertically migrating winter krill swarms in Antarctica (1989)
    Springer
    In:  Polar Biology, 10 (1).
    Details
    Publication Date: 2020-06-10
    Description: The foraging behaviour of fur seals and two species of surface feeding seabirds was observed over swarms of vertically migrating krill along the Antarctic Peninsula in July 1987. Fur Seal haul out patterns were correlated with krill in the upper 30 m of the water column. Krill moved to the surface at night; seals subsequently foraged from 1400-0700 hours before returning to floes. Foraging was continuous through the night. Dive duration decreased as krill moved up to the surface; shorter dives may have been more successful than longer ones. It is possible that very deep dives, which occur early in a foraging bout, represent more of an attempt to assess krill depth and distribution rather than being a genuine foraging effort. Seabirds responded to the presence of a surface krill swarm by circling over it and foraging; krill at depths greater than 30 m elicited directional flight and low frequencies of prey capture attempts. Both Snow Petrels and Antarctic Terns preyed on krill, but each species approached the swarms from different habitats. Snow Petrels primarily overflew areas covered by ice; terns preferred open water. This suggested that prey encounters are essentially opportunistic, although the search for prey is limited to rather specific marine habitats. This feature may be important to our understanding of the factors that determine the pelagic distribution of seabirds.
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  • 19
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    Glaciomarine sedimentation in epicontinental seas exemplified by the northern Barents Sea (1989)
    Elsevier
    In:  Marine Geology, 85 (2-4). pp. 225-250.
    Details
    Publication Date: 2018-03-02
    Description: Sediments on high Arctic shelves result from modern processes and the effect of former glaciations. Based on data from the northern Barents Sea, an area with input from large and numerous surging glaciers, we define two principal zones with different environmental regimes and corresponding sedimentary facies: (1) a glacier-proximal zone influenced by grounding-line processes and the immediately adjacent areas affected by glacial sediment input, and (2) a glacier-distal, sea-ice and current-controlled zone, which also includes a wide sediment-starved region dominated by biogenic carbonate accumulation. Characteristic of the glacier-proximal zone are glacial surges which affect sedimentation rates and leave a diagnostic pattern of sea-floor morphologies. Extensive ice gouging causes a homogeneous sediment texture. In the glacier-distal zone, fine-grained mud supplied from sea ice and infrequent coarser material deposited from icebergs is reworked by modern oceanographic processes. On shallow banks, in 30–50 m of water, carbonates accumulate from a prolific bottom fauna formed in response to extensive reworking and nutrient supply.
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  • 20
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    Mass transfer during sub-seafloor alteration of the upper Troodos crust (Cyprus) (1989)
    Springer
    In:  Contributions to Mineralogy and Petrology, 102 (1). pp. 93-101.
    Details
    Publication Date: 2018-03-02
    Description: Five major alteration zones in the Extrusive Series and the Sheeted Dike Complex of the Troodos Ophiolite are each characterized by (a) distinct elemental changes compared to the original composition and (b) secondary mineralogy. The upper ca. 300 m of the extrusive crust, the highly oxidatedcold seawater alteration zone (CSA), is strongly enriched in K2O and depleted in Na2O. It is followed downwards by alow temperature alteration zone (〈170° C) which is most widespread in the Troodos extrusives and where Na2O and K2O are enriched, the latter less strongly than in the CSA zone. Three types ofhigh temperature alteration zones (〈440° C; HTA I–III) are found in the Sheeted Dike Complex. All are marked by thorough leaching of K2O, while the behavior of Na2O (e.g. unchanged in type III) and CaO (depleted in type I, enriched in types II, III) is variable. Mass budgets of elemental changes are quantified by calibration of whole rock analyses via systematic stable element variations of fresh glasses found throughout the extrusive section. The Troodos extrusive crust and upper Sheeted Dike Complex are a major sink for MgO, K2O, and Na2O, and a source for CaO; the overall scale of fluxes drastically exceeds estimates based on fresh basalt compositions from present ocean crust.
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  • 21
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    Seasonal growth lines in pleistocene scleractinians from barbados: Record potential and diagenesis (1989)
    Springer
    In:  Paläontologische Zeitschrift, 63 (3). pp. 207-214.
    Details
    Publication Date: 2016-02-23
    Description: Growth line analysis of diagenetically altered scleractinians is only possible if carbonate diagenesis has followed the pathway of aragonite leaching and coeval formation of low magnesium calcite. All other possibilities of aragonite transformation into calcite exclude the preservation of this growth line banding. Examples of these diagenetic patterns are found in the Pleistocene of Barbados.
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  • 22
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    Late quaternary spatial and temporal changes in clay- and silt-size mineral assemblages of fiord and shelf cores, western Baffin Bay, northwest North Atlantic (1989)
    Elsevier
    In:  Continental Shelf Research, 9 (5). pp. 445-463.
    Details
    Publication Date: 2016-04-08
    Description: Clay- and silt-size mineral assemblages are described from eight piston cores from the fiords and shelf on the western margin of Baffin Bay, Arctic Canada. Radiocarbon dates indicate that all the cores extend back in time to the last local glacial/interglacial transition (i.e. 8–10 ka); four extend back to between 10 and 12 ka, and HU77-021-156, located on the Southeast Baffin Island shelf, includes the entire late Foxe glacial stage. Silt- and clay-size particles constitute ca 40 and 55%, respectively, by weight of the bulk sediment. The clay-size fraction is dominated by mica; feldspars and quartz are the main constituents of the silt fraction. The fiord sediments are mainly composed of local mineralogies, but on the shelf, and at times in the fiords, exotic mineral species occur. The most important of these are detrital carbonates, derived from erosion of the Paleozoic basins in Arctic Canada and/or northwest Greenland. Both calcite and dolomite occur; calcite is the major carbonate mineral in the “southern” cores, whereas dolomite is the most abundant in cores north of 66°N. Higher inputs of carbonate species occur during regional deglaciation, 7–10 ka, and during the last 5 ka (probably reflecting increased iceberg production from northwest Greenland). Thus variations in the precentages of the carbonate minerals indicate significant shifts in Late Quaternary glacial-sediment source areas and oceanographic regimes.
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  • 23
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    Ostracod faunas and water masses across the continental margin off southwestern Africa (1989)
    Elsevier
    In:  Marine Geology, 87 (2-4). pp. 323-328.
    Details
    Publication Date: 2016-04-11
    Description: Changes in composition of modern benthic ostracod faunas across the continental margin of southwestern Africa occur at boundaries between and within major water masses: a Mixed Layer-Antarctic Intermediate Water (AAIW) boundary at 200 m, an AAIW salinity minimum zone at 650 m, an AAIW bathyal thermocline at 1000 m, and the AAIW/North Atlantic Deep Water (NADW) boundary at 1500 m. In addition, two population changes occur within the NADW at 1.8–2.0 km and 2.0–3.0 km. The Antarctic Bottom Water assemblage is sparse and poorly preserved.
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  • 24
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    Authigenic zeolites and their relation to silica diagenesis in ODP Site 661 sediments (Leg 108, Eastern Equatorial Atlantic) (1989)
    Springer
    In:  Geologische Rundschau, 78 (3). pp. 779-792.
    Details
    Publication Date: 2020-07-30
    Description: At ODP Site 661 from the continental margin of Northwest Africa, authigenic clinoptilolites were investigated in detail. Based on chemical data, crystal size and shape and their intergrowth with associated mineral phases, two types of clinoptilolite (type A and B) occur representing different diagenetic conditions under which the formation of zeolites took place. Clinoptilolite type A was found in a sediment section comprises numerous hiatuses and stratigraphically condensed sediments and could have been formed during early diagenesis. In contrast, clinoptilolite type B was precipitated in Campanian sediments during later diagenesis, after the transformation from opal-A to opal-CT had taken place. At Site 661, the silica source for the authigenesis of both clinoptilolite types is biogenic opal. Volcanic ash material occurs, but in low amounts and thus is not a prerequisite for the formation of clinoptilolite at Site 661.
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  • 25
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    Geology of an active hot spot: Teahitia-Mehetia region in the South Central Pacific (1989)
    Springer
    In:  Marine Geophysical Research, 11 (1). pp. 27-50.
    Details
    Publication Date: 2017-06-22
    Description: The Teahitia-Mehetia hot spot region located in the southeastern extension of the Society Islands chain, near 18° S–148° W consists of several active volcanoes. The distribution of recent volcanic activity correlates with seismic epicenters, and covers an area of more than 1000 km2. Intermittent volcanic activity has given rise to large (〉1000 m high) and small (〈500 m high) edifices composed of various types of flows. Several recent volcanic events have produced a suite of alkalic rocks ranging from ankaramites, through alkali basalts to trachy-phonolites. The presence of altered MORB-like tholeiites on one small seamount suggests that a different mantle source material was involved in forming some of the crust in this hot spot region.
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  • 26
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    Antarctic cephalopods - a living marine resource (1989)
    Springer
    In:  AMBIO, 18 (1). pp. 55-59.
    Details
    Publication Date: 2020-09-18
    Description: In the Antarctic there are large unexploited stocks of cephalopods with high potential commercial value and there are two important fisheries for squid in the cool temperate waters of the Southern Ocean, adjacent to the Antarctic, in the Atlantic and Pacific sectors. Squid fisheries can develop very rapidly, and if this were to happen in the Antarctic before adequate management plans could be established, there would be serious consequences for the squid stocks, and also for the vertebrate predator populations which depend on them. It is especially important to increase our knowledge of the Antarctic cephalopod species, their distribution and role in the food chain, and to understand their life cycles
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  • 27
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    Phytoplankton carbon dynamics during a winter/spring diatom bloom in an enclosed marine ecosystem: primary production, biomass and loss rates (1989)
    Springer
    In:  Marine Biology, 103 . pp. 131-142.
    Details
    Publication Date: 2018-03-21
    Description: Phytoplankton production, standing crop, and loss processes (respiration, sedimentation, grazing by zooplankton, and excretion) were measured on a daily basis during the growth, dormancy and decline of a winter-spring diatom bloom in a large-scale (13 m3) marine mesocosm in 1987. Carbonspecific rates of production and biomass change were highly correlated whereas production and loss rates were unrelated over the experimental period when the significant changes in algal biomass characteristic of phytoplankton blooms were occurring. The observed decline in diatom growth rates was caused by nutrient limitation. Daily phytoplankton production rates calculated from the phytoplankton continuity equation were in excellent agreement with rates independently determined using standard 14C techniques. A carbon budget for the winter bloom indicated that 82.4% of the net daytime primary production was accounted for by measured loss processes, 1.3% was present as standing crop at the end of the experiment, and 16.3% was unexplained. Losses via sedimentation (44.8%) and nighttime phytoplankton respiration (24.1%) predominated, while losses due to zooplankton grazing (10.7%) and nighttime phytoplankton excretion (2.8%) were of lesser importance. A model simulating daily phytoplankton biomass was developed to demonstrate the relative importance of the individual loss processes.
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  • 28
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    Turbulent momentum and salt transport in the mixing zone of the Elbe estuary (1989)
    Elsevier
    In:  Estuarine, Coastal and Shelf Science, 28 (6). pp. 615-638.
    Details
    Publication Date: 2017-01-04
    Description: Measurements in the mixing zone of the Elbe estuary were performed during three consecutive tidal cycles with three types of instruments—a moored tripod with velocity and temperature/conductivity/light attenuation sensors, a profiling sonde with similar sensors lowered from an anchored vessel, and instrumented moorings. Acoustic-travel-time sensors were used for velocity measurements. Spectral analysis of 12·8 min pieces of the obtained time series gives results that are consistent with isotropic turbulence for part of the frequency space. Temporal changes of turbulent kinetic energy are correlated with tidal current velocity. A retardation is found between changes in tidal current and turbulent energy. Not all shear stress terms are in similar phase with tidal flow. Mean gradients, Reynolds stress terms, and turbulent salt flux terms are combined to determine eddy viscosity and eddy diffusion coefficients.
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  • 29
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    The role of competition for limiting resources in phytoplankton species replacements (1989)
    Springer
    In:  In: Plankton ecology: succession in plankton communities. , ed. by Sommer, U. Springer, Berlin, Germany, pp. 57-106. ISBN 3-540-51373-6
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    Publication Date: 2012-03-22
    Type: Book chapter , NonPeerReviewed
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  • 30
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    Plankton ecology, succession in plankton communities (1989)
    Springer
    In:  , ed. by Sommer, U. Springer, Berlin, Germany, 369 pp. ISBN 3-540-51373-6
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    Publication Date: 2012-02-28
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  • 31
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    A comparison of acoustic and rock-magnetic properties of equatorial Atlantic deep-sea sediments: paleoceanographic implications (1989)
    Elsevier
    In:  Earth and Planetary Science Letters, 94 (3-4). pp. 291-300.
    Details
    Publication Date: 2016-08-02
    Description: Compressional-wave (P-wave) velocities and magnetic susceptibilities were measured on gravity (GGC) and piston cores (PC) and Ocean Drilling Program (ODP) Leg 108 advanced piston cores (APC) from the equatorial Atlantic to test our hypothesis that climatically driven changes in terrigenous and biogenic fluxes, and in carbonate dissolution control the interrelationships between the two signals. In Pleistocene sediments deposited above the calcium compensation depth (CCD) we observed changes in P-wave velocity and magnetic susceptibility that are (1) inversely correlated, and (2) coherent to changes in glacial-interglacial climate. Glacials show low P-wave velocities and relatively high magnetic susceptibilities. In contrast, interglacials show high P-wave velocities and relatively low magnetic susceptibilities. These temporal changes in P-wave velocity and magnetic susceptibility reflect the climatic history recorded in the sediments and are related to: (1) the production of biogenic carbonate, mainly planktonic foraminifera, and (2) the terrigenous sediment supply that contains magnetic minerals. Below the CCD this pattern disappears and consistently low P-wave velocities and distinctly higher magnetic susceptibilities prevail. The distinct decrease of large P-wave velocity fluctuations is due to the dissolution of carbonate sediments which cause a distinct decrease in sand grain sizes and a consistently low carbonate content (〈 10%). Dilution of magnetic material by the carbonate fraction is minor and the high magnetic susceptibility values and the relatively high amplitude variations in magnetic susceptibility are due to changes in the magnetic mineral concentration of the terrigenous (non-carbonate) fraction. In early Pliocene sediments we also observed covarying velocity and magnetic susceptibility signals that may reflect a predominatly terrigenous control on sedimentation. Our preliminary results demonstrate that a combined use of non-destructive measurements of acoustic and rock-magnetic signals provides a potential paleoceanographic tool for characterizing: (1) glacial-interglacial pelagic sedimentation, (2) pelagic sedimentation above the CCD, (3) increases in carbonate dissolution, and (4) areas below the CCD. Furthermore, rock magnetic fluctuations in sediments below the CCD may provide an important stratigraphic tool for the deep carbonate-free basins of the world's oceans.
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  • 32
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    Design and function of closed seawater systems for culturing loliginid squids (1989)
    Elsevier
    In:  Aquacultural Engineering, 8 (1). pp. 47-65.
    Details
    Publication Date: 2020-06-11
    Description: The life cycle of loliginid squids has been completed in recirculating seawater systems. Two systems were required: a 2 m diameter circular culture tank (CT) with adjoining 2 m circular filter tank (3000 liters total volume of natural seawater) for culture of hatchlings, 1–60 days old; and a 6 × 2·6 × 1 m raceway culture tank (RW) with a smaller adjoining rectangular filter tank (14 850 liters total volume of artificial seawater) for the grow-out of adults. Both systems were equipped with temperature control apparatus, modular filter units (particle filters and activated carbon), foam fractionators, biological filters (crushed oyster shell) and UV sterilizers. The systems carried low bioloads, 〈 1·0 g/m3 and as high as 0·8 kg/m3, respectively. Water quality was excellent: NH4N was below 0·01 mg/liter in the CT and 0·10 mg/liter in the RW: NO2N was below 0·01 mg/liter in the CT and 0·03 mg/liter in the RW; NO3N was below 12 mg/liter in the CT and below 50 mg/liter in the RW; and pH was above 8·0 in both systems. The design of the systems proved to be behaviorally and physiologically suitable for squids and two species grew to adult size and produced viable young. These systems are compared to other squid maintenance and rearing systems and marine recirculating seawater systems.
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  • 33
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    Didemnin B: Comparative study and conformational approach in solution (1989)
    Elsevier
    In:  Tetrahedron, 45 (1). pp. 181-190.
    Details
    Publication Date: 2020-05-13
    Description: A comparative study of isodideimnine-1 and didemnin B is presented using spcctroecopic methods, partial degradation and partial synthesis. This leads to the conclusion of the presence of a single depsipeptide, namely didemnin B, with (3S,4R,5S) isostatine instead of the previous statine residue. An attempt to determine the whole conformation in solution of didemnin B by using 2D-NMR is also described.
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  • 34
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    Debris avalanche deposits by the 1984 collapse of Ontake Volcano, central Japan (1989)
    Springer
    In:  In: Volcanic hazards. , ed. by Latter, J. H. IAVCEI Proceedings in Volcanology, 1 . Springer , Berlin, pp. 210-229.
    Details
    Publication Date: 2014-02-10
    Type: Book chapter , NonPeerReviewed
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  • 35
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    The crustal structure along the POLAR Profile from seismic refraction investigations (1989)
    Elsevier
    In:  Tectonophysics, 162 (1-2). pp. 51-85.
    Details
    Publication Date: 2019-05-06
    Description: Seismic refraction investigations along a 440-km long profije on the northern Baltic Shield have resolved the crustal structure in this area of Archaean to Early Proterozoic lithosphere formation. The profile, called the POLAR Profile, extends approximately along a SW-NE-oriented line from the Karelian Province in northern Finland across the Lapland Granulite Belt and the Kola Peninsula Province to the Varanger Peninsula in northeastern Norway. At six shotpoints, large explosions (200–1680 kg), and at three shotpoints, small explosions (80 kg) were detonated and recorded at an average station spacing of 2 km, providing high-quality record sections. A two-dimensional cross section of the crust was obtained by forward modelling using ray-tracing techniques. High-velocity bodies are found in the upper crust related to the Karasjok-Kittilä Greenstone Belt and the Lapland Granulite Belt. They extend to a depth of 6–13 km. In the Karelian Province in the southwest, a low-velocity zone was found between the depths of 8 and 14 km. The middle crust shows a slight increase in the average velocities from the southwest to the northeast, and a small velocity jump is found along a mid-crustal boundary between 18 and 21 km. The thickness of the middle crust varies between 16 and 18 km. The lower crust and the crust-mantle boundary (Moho) show considerable lateral variation. The top of the lower crust lies between 26 and 33 km, while its thickness decreases from 21 km in the southwest to 10–14 km beneath the Lapland Granulite Belt and the Inari Terrain, reaching 20 km again in the extreme northeast. The velocities also change laterally. The thin lower crust is characterized by rather low velocities (6.8–6.9 km/s), whereas in the southwest and northeast the velocities (6.9–7.3 km/s) resemble more typical shield structures. The Moho is found at 47 km in the Karelian Province, rises to 40 km beneath the Lapland Granulite Belt and descends to 46 km in the northeastern part of the Kola Peninsula Province. The upper mantle velocities at the Moho range from 8.1 km/s in the region of the thin crust, to 8.5 km/s and more beneath the Karelian Province. It is tempting to suggest that the anomalous lower crust underlying the Lapland Granulite Belt and the Inari Terrain may represent the remnants of an Early Proterozoic back-arc basin that was active prior to the 2.0 to 1.9 Ga plate convergence event, during which the Lapland Granulite Belt was thrust onto the Archaean basement of the Karelian Province. Another explanation is to assume that the velocity reduction in the anomalous lower crust was caused by a rather pronounced uplift of this region following the 1.9-Ga collision event.
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  • 36
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    Subduction-induced pore fluid venting and the formation of authigenic carbonates along the cascadia continental margin: Implications for the global Ca-cycle (1989)
    Elsevier
    In:  Palaeogeography, Palaeoclimatology, Palaeoecology, 71 (1-2). pp. 97-118.
    Details
    Publication Date: 2019-05-06
    Description: Pore fluid venting associated with subduction-induced sediment deformation causes precipitation of calcium carbonate as prominent carbonate chimneys or cement in the accreted sediments across the active continental margin off Oregon and Washington. A depletion of interstitial Ca2+ with a maximum decrease of 50% relative to seawater Ca2+ over only 1.5m depth and reduction in porosity in the deformed sediments suggest that interstitial Ca2+ is removed to form calcium carbonate cement. In contrast, the pore waters of the undeformed abyssal plain sediments show no depletion in dissolved Ca2+. They are either enriched to a maximum of 5% or show no change in dissolved Ca2+. Here the background level of CaCO3 content in the sediment is only 0.1 to 1%. Calcium carbonate precipitation in the deformed sediments probably occurs as the result of upward migration and oxidation of biogenic methane and of the increase in carbonate saturation due to release of excess pore pressure during fluid venting. Upward advection of fluids at rates of 1–28 cm y−1 is predicted from diffusion-advection-reaction models applied to the downcore concentration profiles of dissolved Ca2+ and NH4+ in the tectonically-deformed sediments. The range of predicted flow rates is related to the type of calcium carbonate lithification; i.e. slow rates generate cement and fast rates generate chimneys. Carbonate mineral precipitation associated with pore fluid venting requires direct transfer of Ca2+ from the oceanic basement to the accretionary complex. Such a mechanism leads us to propose that the accretionary complexes of the global plate subduction zones are a major sink for crustal Ca2+. A global flux of crustal Ca2+ that is removed by carbonate mineral precipitation may be as muc3 as the hydrothermal Ca-input. This significant Ca-flux, not previously considered in the global geochemical budget, implies that pore fluid venting in subduction zones may also act as a global sink or source for other elements.
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  • 37
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    Cretaceous ocean crust at DSDP Sites 417 and 418: Carbon uptake from weathering versus loss by magmatic outgassing (1989)
    Elsevier
    In:  Geochimica et Cosmochimica Acta, 53 (11). pp. 3091-3094.
    Details
    Publication Date: 2019-05-10
    Description: Ocean crustal carbon uptake during seafloor alteration at DSDP Sites 417A, 417D, and 418A exceeds the estimated loss of carbon during magmatic ridge outgassing. If these sites are representative for oceanic crust in general, 2.2–2.9 × 1012 moles of carbon are removed from the oceans per year as a net flux of carbon between the oceanic crust and seawater. Although most of this carbon occurs as calcium carbonate, this ocean crustal carbonate probably cannot be considered part of the marine calcium carbonate sink since much of the Ca in these carbonates must be derived from basalt alteration that is not balanced by a concomitant uptake of seawater Mg. Our present estimate cannot be satisfactorily applied to global carbon budgets, because of uncertainties in the bulk budget of ocean floor alteration and because of the uniqueness of our estimate. Yet, our data document that the formation of ocean crust provides a significant sink for carbon that should be included in models of the global cycling of carbon. Furthermore, magmatic outgassing during ocean crust emplacement and seafloor basalt alteration may provide a buffering mechanism for atmospheric carbon.
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  • 38
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    The manganese nodules of the Kane Gap (East Atlantic). Indicators of sedimentation — erosion changes (1989)
    Springer
    In:  Geologische Rundschau, 78 (3). pp. 943-958.
    Details
    Publication Date: 2019-02-01
    Description: Manganese nodules from the Kane Gap (a deep sea channel connecting the Sierra Leone and Gambia Basins off West Africa) were investigated chemically and dated by10Be along cross-sections. Comparing the nodule structure with the stratigraphy of the related sediments, the following conclusions are drawn concerning the sedimentation processes during the last 4 to 6×106 years: The growth of the nodules started about 4 to 4.5 Ma before present during or near to the end of a period of erosion on a fossil-free, probably Miocene sediment. During the first phase of only a few hundred thousandyears, the nodules grew very quickly (7 to 〉18 mm/Ma). Fe-rich hydrogenetic material formed the internal sections of the nodules during this time. Slowing down of the bottom currents, resulting in deposition of thin sediment covers for short intervals, caused the character of the nodules to change to a more diagenetic composition. The growth rates were reduced to about 1 to 2 mm/Ma. The time of slowing is roughly 3 to 4 Ma BP. Probable uncertainties of the dating and growth rates resulting from supposed changes of the10Be supply to the nodules due to variations of the near bottom environment are discussed.
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  • 39
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    The genesis and significance of N-MORB sub-types (1989)
    Springer
    In:  Contributions to Mineralogy and Petrology, 102 (1). pp. 112-126.
    Details
    Publication Date: 2019-05-13
    Description: A global compositional dichotomy for N-MORB magma (N1/N2) is recognized on the basis of Na2O, TiO2, CaO, and Al2O3 contents, and their respective ratios. We have characterized the two magma sub-types by means of their trace element patterns, and attempted to explain the differences in major and trace element contents in terms of a partial melting model, using data from DSDP/IPOD Leg 82. Mass balance calculations for N-MORB glass and rock compositions indicate that differences between N1-and N2-MORB are consistent with simple differences (5%–10%) in the degree of partial melting of a plagioclase-(±spinel) lherzolite, at pressures 〈10 kbar, rather than their respective derivation from plagioclase- and spinel-lher-zolite sources. Based on published and calculated partition coefficients, and calculated source magmaphile trace element compositions, the calculations indicate that the overall range of N-MORB compositions may be derived by between approximately 8% and 20% partial melting of a fertile lherzolite source. Fluid dynamic and melt kinematic considerations will probably necessitate refinement of the model, but should also take account of its qualitative precepts.
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  • 40
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    Tectonic erosion at the front of the Japan Trench convergent margin (1989)
    Elsevier
    In:  Tectonophysics, 160 (1-4). pp. 75-90.
    Details
    Publication Date: 2019-05-13
    Description: The imaging of a multichannel seismic record was improved by reprocessing using pre-stack techniques. The reprocessed record shows structures that indicate tectonic erosion and gravity collapse at the front of the Japan Trench margin. Much of the lower slope appears to be underlain by a detached, coherent block of continental crust. The lower slope has failed by mass wasting and the resulting apron of slump debris at the base of the slope has become involved in thrust faulting at the front of the subduction zone. Slumping continues as long as debris is removed from the front of the margin by subduction, and the apron cannot build up sufficiently to stabilize the failing lower slope. Truncated beds at the base of the upper plate indicate subcrustal erosion as well, this probably being the main cause of massive subsidence of the margin. Subsidence was the cause of oversteepening, destabilization and subsequent gravity collapse of the leading edge of the upper plate.
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  • 41
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    Subglacial meltwater discharge in the open-marine tidewater glacier environment: Observations from Nordaustlandet, Svalbard Archipelago (1989)
    Elsevier
    In:  Marine Geology, 86 (4). pp. 265-281.
    Details
    Publication Date: 2019-05-06
    Description: The ice-proximal environment of the Nordaustlandet tidewater ice cap, Svalbard Archipelago, is one of the best analogues for understanding glacial geologic processes of northern continental shelves during initial Pleistocene deglaciation. Investigations of the proglacial region in 1980–1983 showed that the sedimentary environment is dominated by numerous meltwater outflows which discharge sediment-laden water from subglacial meltwater streams during the summer. Two large, stable meltwater outflows were observed in embayments along the southern part of the ice front. Landsat images show that both outflows have been in approximately the same position since at least 1976. They are located at the intersection of glacial drainage basins and centered over depressions in the underlying bedrock. An “outflow valley” extending away from the ice front was observed in front of the western meltwater outflow. Sidescan sonar profiling along the glacier front showed a 200 m wide gap in acoustic reflection at the base of the western meltwater outflow, probably caused by meltwater effluence. Enhanced sediment accumulations in this region, observed as a ≈ 3 ms sediment drape in front of the outflow, and large arcuate ridges in the outflow valley, testify to the transport efficiency of the subglacial meltwater stream. Several mounds, up to about 25 m high and 200 m wide, are observed on sidescan and 3.5 kHz profiles directly in front of the outflow. Although samples from these structures are absent, they are most likely composed of sediment and are similar to beaded eskers observed in Pleistocene glacimarine sequences indicating locally very high sedimentation rates. Fine-grained components of the subglacial discharge incorporated in the buoyant meltwater plume are usually entrained in a westerly coastal current. Elevated suspended particulate material concentrations are observed within the coastal waters in a region extending about 15 km perpendicular to the glacier front and at least 60 km along the ice front extending into the northwestern Barents Sea.
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  • 42
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    Recent Studies on Spawning, Embryonic Development, and Hatching in the Cephalopoda (1989)
    Elsevier
    In:  Advances in Marine Biology, 25 . pp. 85-115.
    Details
    Publication Date: 2019-02-19
    Description: Cephalopods are exclusively marine molluscs and should be included among the organisms that are of general interest to marine biologists. As to experimental embryology, Naef has already stressed the suitability of cephalopod embryos for experimental work. The whole body of information accumulated in this field during the past half century since Naef published his monograph was reviewed by Marthy. This field of research is clearly underrated by many developmental biologists who could profit by the topological simplicity of the blastulation pattern in cephalopods, which contrasts with the spiralian mode of other molluscs. Questions raised by comparative/evolutionary embryology, following the tradition of descriptive developmental morphology, are truly stimulating to the field of experimental embryology, and vice versa. However, experimental studies are generally possible with only a limited number of models, which, in the case of cephalopods, appear to be embryos of medium to small size. On the other hand, some of the most intriguing questions in cephalopod biology are related to those forms that produce eggs of extremely large size. This chapter gives a brief overview of these recent studies placing them in the chronological sequence of embryogenesis. Studies covering early stages of embryonic development as well as later ones will be cited at least once in the section dealing with the earliest stage considered. Most of these investigations ultimately rest on the basic work by Naef.
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  • 43
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    Evidence for multiple spawning in the tropical oceanic squid Sthenoteuthis oualaniensis (Teuthoidea: Ommastrephidae) (1989)
    Springer
    In:  Marine Biology, 101 . pp. 513-519.
    Details
    Publication Date: 2016-11-25
    Description: Indirect evidence suggests that Stenoteuthis oualaniensis is a multiple spawner, a reproductive strategy not reported previously for squid. After spawning once, S. oualaniensis apparently continues to feed, grow, and mature additional oocytes before spawning again. Squid were caught by jigging at night in waters around the main Hawaiian Islands during four cruises from 1981 to 1987. All females from 200 mm mantle length (ML) to at least 318 mm ML were sexually mature, indicating that considerable growth takes place after reaching sexual maturity. Size-frequency analyses of ovarian oocytes revealed continuous egg production throughout adult life. Mature ova are stored in the oviducts, but oviduct fullness is unrelated to body size, indicating repeat spawning.
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  • 44
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    Food and feeding ecology of emperor penguins in the eastern Weddell Sea (1989)
    Springer
    In:  Polar Biology, 9 (6). pp. 385-390.
    Details
    Publication Date: 2020-06-10
    Description: The diet of the emperor penguin Aptenodytes forsteri in the eastern Weddell Sea, Antarctica was studied during October and November 1986 by stomach content analysis. Emperor penguins fed mainly on Antarctic krill Euphausia superba, Antarctic silverfish Pleuragramma antarcticum and squid Psychroteuthis glacialis. Benthic prey was not found. The prey composition suggests two different feeding strategies, shallow dives exploring the rugged underside of sea ice where krill is taken, and deep dives when mesopelagic fish and squid are consumed. Chicks were fed on average every 1.44 days.
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  • 45
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    Increase in numbers of male fur seals Arctocephalus gazella during the summer autumn period at Mossman Peninsula (Laurie Island) (1989)
    Springer
    In:  Polar Biology, 9 . pp. 487-488.
    Details
    Publication Date: 2020-11-06
    Description: The fur seal, Arctocephalus gazella, population at Mossman Peninsula (Laurie Island) was studied from 1985 to 1987. Weekly counts were carried out at a 4 km bachelor haul-out beach from December through June. Maxima of 2 240, 2 787 and 5 196 juvenile and adult males were counted during March of the respective years. Census data indicate an increase in the non-breeding population of 13.5% between 1985–1986 and 46.5% between 1986–1987.
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  • 46
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    Sedimentary facies of glacial-interglacial cycles in the Norwegian Sea during the last 350 ka (1989)
    Elsevier
    In:  Marine Geology, 86 (4). pp. 283-319.
    Details
    Publication Date: 2019-05-06
    Description: Sediment fluxes were highest in the Norwegian Sea during late glacial/early deglacial periods, i.e., at oxygen isotope transition 43, below transition 65, at various levels within stage 6, and below stage 9. Dark diamictons deposited at these times reflect intense iceberg rafting in surface waters fed by surges along the front of the marine-based parts of the continental ice sheets in the southeastern sector of the Norwegian Sea. The high organic carbon content (0.5–1.3%) in these layers reflects input from erosion of terrigenious matter-rich sediments outcropping on the shelves. Partial oxidation of organic matter and decreased deep-water renewal may explain the strong carbonate dissolution observed during these periods. Interglacial environments were strongly variable throughout the last 350 ka. Circulation patterns of stage 5e best resemble modern conditions, while stage 7 and 9 sediments record a much weaker Norwegian Current.
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  • 47
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    Biochemical genetic studies on the Patagonian squid Loligo gahi d'Orbigny. I. Electrophoretic survey of genetic variability (1989)
    Elsevier
    In:  Journal of Experimental Marine Biology and Ecology, 126 (3). pp. 231-241.
    Details
    Publication Date: 2016-11-29
    Description: 19 samples (1189 individuals) of the commercially fished Patagonian squid Loligo gahi d'Orbigny were collected from Falkland waters between March 1987 and April 1988 and subjected to starch gel electrophoresis. 41 enzyme-coding loci were screened for polymorphism. Clearly resolved enzyme phenotypes were obtained at 21 loci of which six exhibited polymorphism (glutamate oxaloacetate transaminase, GOT-II, E.C. 2.6.1.1.; α-glycerophosphate dehydrogenase, α-GPDH, E.G. 1.1.1.8; isocitrate dehydrogenase, ICD, E.C. 1.1.1.42; malate dehydrogenase, MDH-II, E.G. 1.1.1.37; phosphogluconate dehydrogenase, PGD, E.C. 1.1.1.44; and phosphoglucose mutase, PGM, E.G. 2.7.5.1). Routine scoring at the 21 loci revealed moderate levels of genetic variability, with the proportion of polymorphic loci, P = 0.273, mean heterozygosities per locus = 0.0693, and the effective number of alleles, Ne, with values of 1.13–1.83.
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  • 48
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    Biochemical genetic studies on the Patagonian squid Loligo gahi d'Orbigny. II. Population structure in Falkland waters using isozymes, morphometrics and life history data (1989)
    Elsevier
    In:  Journal of Experimental Marine Biology and Ecology, 126 (3). pp. 243-258.
    Details
    Publication Date: 2016-11-29
    Description: Genetic population structure of the commercially fished Patagonian squid Loligo gahi d'Orbigny was examined by collecting 19 samples (1189 individuals) from Falkland waters between March 1987 and April 1988 and subjecting individuals to electrophoretic and morphometric analysis. Morphological features (dorsal mantle length, fin length oblique, fin width, interorbital width, tentacle length, length of arms I and II, and mid-mantle circumference), sex and stage of reproductive maturity (Lipinski's universal scale) were recorded prior to electrophoresis. Analyses of allele frequencies at six polymorphic loci provided no evidence of stock separation, and the frequency distribution of genotypic classes almost exclusively fitted Hardy-Weinberg expectations for a randomly interbreeding population. Nei's mean genetic distances and identities between samples ranged from 0.000–0.002 and 0.997–1.00, respectively, supporting the contention of a genetically homogeneous breeding unit. Multivariate analyses revealed significant differences in the morphometrics among certain samples collected at approximately the same time, especially of interorbital width, first arm length and fin width. This morphological differentiation was not correlated with differences at the genetic level. The frequency distribution of dorsal mantle length and stages of reproductive maturity through the year were compatible with two alternative interpretations of population structure: (i) the existence of two temporally distinct separate spawning populations, one autumn- and the other spring-spawning, or, (ii) that slow-growing or late spawned individuals spawn at 18 months old while most squid spawn at 1 yr old in the austral spring and summer. Although it is not possible to discount either interpretation unequivocally, the latter hypothesis of population structure is more congruent with existing genetic evidence.
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  • 49
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    Respiration and nitrogen excretion by the squid Loligo forbesi (1989)
    Springer
    In:  Marine Biology, 103 (3). pp. 333-338.
    Details
    Publication Date: 2020-07-14
    Description: Respiration and nitrogen excretion rates of mature adult Loligo forbesi were investigated at the Roscoff Laboratory (North Brittany, France) during individual short-term incubation experiments in January 1986. The squids were in post-digestive condition and not actively swimming. Both oxygen uptake and nitrogen excretion are continuous processes. The metabolic rates of this active nektonic species (145 ml kg-1 h-1 oxygen uptake, 18.56 μg g-1 h-1 ammonia excretion) are distinctly higher than those of benthic cephalopods. Proteins constitute the main metabolic substrate for energetic needs. Besides ammonia, urea is also continuously released, in amounts ranging from 5 to 16% of ammonia-excretion values.
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  • 50
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    Preface: Towards a Darwinian ecology of plankton (1989)
    Springer
    In:  In: Plankton ecology - success in plankton communities. , ed. by Sommer, U. Springer, Berlin, Germany, pp. 1-8.
    Details
    Publication Date: 2019-08-07
    Type: Book chapter , NonPeerReviewed
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  • 51
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    Methane-derived CO2 in pore fluids expelled from the Oregon subduction zone (1989)
    Elsevier
    In:  Palaeogeography, Palaeoclimatology, Palaeoecology, 71 (1-2). pp. 119-136.
    Details
    Publication Date: 2020-08-07
    Description: Pore fluids extracted from near-surface sediments of the deformation front along the Oregon subduction zone have, in general, the dissolved nutrient pattern characteristic of bacterial sulfate reduction. However, in certain locations there are peculiar ammonium distributions and anomalously 13C-depleted dissolved ΣCO2. These carbon isotope and nutrient patterns are attributed to the concurrent microbially-mediated oxidation of sedimentary organic matter (POC) and methane (CH4) originating from depth. In contrast to the oxidation of sedimentary organic matter in the sulfate zone, utilization of methane as the carbon source by sulfate-reducing bacteria would generate only half as much total carbon dioxide for each mole of sulfate consumed and would not generate any dissolved ammonium. The isotopically light ΣCO2 released from methane oxidation depletes the total metabolic carbon dioxide pool. Therefore, NH4+, ΣCO2 and δ13C of interstitial carbon dioxide in these pore fluids distintcly reflect the combined contributions of each of the two carbon substrates undergoing mineralization; i.e. methane and sedimentary organic matter. By appropriately partitioning the nutrient and substrate relationships, we calculate that in the area of the marginal ridge of the Oregon subduction zone as much as 30% of the ΣCO2 in pore fluids may result from methane oxidation. The calculation also predicts that the carbon isotope signature of the carbon dioxide derived from methane is between −35‰ and −63‰ PDB. Such an isotopically light gas generated from within the accretionary complex could be the residue of a biogenic methane pool. Fluid advection is required to carry such methane from depth to the present near-surface sediments. This mechanism is consistent with large-scale, tectonically-induced fluid transport envisioned for accreted sediments of the world's convergent plate boundaries.
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    Global Positioning System-Techniques Applied to Geodesy and Surveying (1988)
    Springer
    In:  Berlin, Springer, vol. 4, no. Subvol. b, pp. 220, (ISBN: 1589480406)
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    Publication Date: 1988
    Keywords: Geodesy ; Textbook of geodesy
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  • 53
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    A pilot vertical seismic profiling experiment in the Cajon Pass Deep Scientific Drillhole (1988)
    Springer
    In:  Bull., Polar Proj. OP-O3A4, Deep Drilling in Crystalline Bedrock II, Berlin, Springer, vol. 65, no. 4, pp. 417-427, (ISBN 0080419208)
    Details
    Publication Date: 1988
    Keywords: Vertical seismic profiling ; Seismics (controlled source seismology) ; Borehole geophys.
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  • 54
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    The UNIX System Guidebook (1988)
    Springer
    In:  Berlin, Springer, vol. Developments in Petroleum Science vol. 15B, no. Publ. No. 12, pp. 9, (3-540-24165-5, XXVI + 228 p.)
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    Publication Date: 1988
    Keywords: Handbook of informatics
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  • 55
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    The logging strategy for the Continental Deep Drilling Programme of the Federal Republic of Germany (1988)
    Springer
    In:  Bull., Polar Proj. OP-O3A4, Deep Drilling in Crystalline Bedrock II, Berlin, Springer, vol. 46, no. XVI:, pp. 428-443, (ISBN: 3-540-23712-7)
    Details
    Publication Date: 1988
    Keywords: Borehole geophys. ; KTB ; Hanel
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  • 56
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    Frictional sliding and the crustal stresses (1988)
    Springer
    In:  Bull., Open-File Rept., Deep Drilling in Crystalline Bedrock II, Berlin, Springer, vol. 4, no. 16, pp. 444-453, (ISBN 1-86239-165-3, vi + 330 pp.)
    Details
    Publication Date: 1988
    Keywords: Stress ; Borehole geophys. ; Fault zone
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  • 57
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    The future of scientific drilling (1988)
    Springer
    In:  Bull., Open-File Rept., Deep Drilling in Crystalline Bedrock II, Berlin, Springer, vol. 9, no. 16, pp. 523-531, (ISBN 1-86239-165-3, vi + 330 pp.)
    Details
    Publication Date: 1988
    Keywords: scientific drilling ; Borehole geophys.
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  • 58
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    Deep Drilling in Crystalline Bedrock II. Projects, Technology, Sciences and Prospects for the Future (1988)
    Springer
    In:  New York, Springer, vol. 17, pp. 225, (ISBN 0-19-851393-3)
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    Publication Date: 1988
    Keywords: Review article ; Borehole geophys. ; Applied geophysics
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  • 59
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    Deep Drilling in Crystalline Bedrock I. The Deep Gas Drilling in the Siljan Impact Structure, Sweden, and Astroblemes (1988)
    Springer
    In:  New York, Springer, vol. 17, pp. 225, (ISBN 0-19-851393-3)
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    Publication Date: 1988
    Keywords: Borehole geophys. ; Applied geophysics ; Textbook of geophysics
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  • 60
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    The German Continental Deep Drilling Program, targets and state (1988)
    Springer
    In:  Deep Drilling in Crystalline Bedrock II, Berlin, Springer, vol. 1, no. 16, pp. 64-81, (ISBN 0080419208)
    Details
    Publication Date: 1988
    Keywords: Borehole geophys. ; KTB ; scientific drilling ; Rischmueller ; Rischmuller
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  • 61
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    Geophysical aspects of recent deep seismic soundings of the German crust (1988)
    Springer
    In:  Bull., Polar Proj. OP-O3A4, Deep Drilling in Crystalline Bedrock II, Berlin, Springer, vol. 1, no. XVI:, pp. 401-416, (ISBN: 3-540-23712-7)
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    Publication Date: 1988
    Keywords: Seismics (controlled source seismology) ; Borehole geophys.
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  • 62
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    Boundary Value Problems in Linear Viscoelasticity (1988)
    Springer
    In:  Berlin, Springer, vol. 10, no. Subvol. b, pp. 220, (ISBN 1-4020-0653-5)
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    Publication Date: 1988
    Keywords: Rheology ; Elasticity ; Inelastic ; Rock mechanics
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  • 63
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    Mechanics of Tectonic Faulting (1988)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 16, no. 1, pp. 662-664, (ISBN 0-470-87000-1 (HB), ISBN 0-470-87001-X (PB))
    Details
    Publication Date: 1988
    Keywords: Textbook of geology ; Tectonics ; Fault zone ; Stress ; Fracture ; Engineering geophys.
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  • 64
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    Continental scientific drilling - a scientific frontier (1988)
    Springer
    In:  Bull., Open-File Rept., Deep Drilling in Crystalline Bedrock II, Berlin, Springer, vol. 9, no. 16, pp. 9, (ISBN 1-86239-165-3, vi + 330 pp.)
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    Publication Date: 1988
    Keywords: Borehole geophys. ; scientific drilling
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  • 65
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    Regulation of respiration during juvenile development of Sepia officinalis (Mollusca: Cephalopoda) (1988)
    Springer
    In:  Marine Biology, 97 (3). pp. 365-371.
    Details
    Publication Date: 2020-07-14
    Description: A culture of juvenile Sepia officinalis L. was kept during summer 1985 in the aquaria of the “Station Marine”, Wimereux, France. During the first four months of juvenile development, oxygen consumption under increasing hypoxia was measured with a closed respirometer. The experiments revealed a high regulatory capacity of juvenile S. officinalis. The critical oxygen concentrations were calculated and their ontogenetical evolution was studied. The critical oxygen concentration increased with increasing development. A linear relationship emerged between the critical oxygen concentration and the logarithm of the wet weight [COc (mg O2 l-1)=-0.393+0.893×log10(Ww)]. The decreasing regulatory capacity of growing S. officinalis is most probably related to adaptations to a changing ecological environment during development. Another possibility is a physiological change, most probably related to the shift from embryonic to adult hemocyanin.
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  • 66
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    Seabeam and seismic reflection imaging of the tectonic regime of the Andean continental margin off Peru (4°S to 10°S) (1988)
    Elsevier
    In:  Earth and Planetary Science Letters, 87 (1-2). pp. 111-126.
    Details
    Publication Date: 2017-11-08
    Description: Marine geophysical surveys employing Seabeam, multi- and single-channel seismic reflection, gravity and magnetic instruments were conducted at two locations along the continental slope of the Peru Trench during the Seaperc cruise of the R/V “Jean Charcot” in July 1986. These areas are centered around 5°30′S and 9°30′S off the coastal towns of Paita and Chimbote respectively. These data indicate that (1) the continental slope off Peru consists of three distinct morpho-structural domains (from west to east are the lower, middle and upper slopes) instead of just two as previously reported; (2) the middle slope has the characteristics of a zone of tectonic collapse at the front of a gently flexured upper slope; (3) the upper half of the lower slope appears to represent the product of mass wasting; (4) thrusting at the foot of the margin produces a continuous morphologic feature representing a deformation front where the products of mass-wasting are overprinted by a compressional tectonic fabric; (5) a change in the tectonic regime from tensional to compressional occurs at the mid-slope-lower slope boundary, the accretionary prism being restricted to the very base of the lower slope in the Paita area. The Andean margin off Peru is an “extensional active margin” or a “collapsing active margin” developing a subordinated accretionary complex induced by massive collapse of the middle slope area.
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  • 67
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    The influence of animals on phosphorus cycling in lake ecosystems (1988)
    Springer
    In:  Hydrobiologia, 170 (1). pp. 267-284.
    Details
    Publication Date: 2016-04-21
    Description: Aquatic animals directly influence the cycling of phosphorus in lakes through feeding and excretion. Traditionally, animals (zooplankton, benthic invertebrates and fish) have been assigned only minor roles in the process of freshwater phosphorus cycling. They were regarded as consumers without much regulating influence. Today there is growing evidence that animals, predators and herbivores, directly or indirectly can control biomass of primary producers and internal cycling of phosphorus. This paper summarizes different mechanisms of transformation and translocation of phosphorus via different groups of organisms.
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  • 68
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    Eruption ages and magma supply rates during the Miocene evolution of Gran Canaria: Single-crystle 40Ar/39Ar laser ages (1988)
    Springer
    In:  Naturwissenschaften, 75 . pp. 616-617.
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    Publication Date: 2020-03-18
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  • 69
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    Energy content of macrobenthic invertebrates: general conversion factors from weight to energy (1988)
    Elsevier
    In:  Journal of Experimental Marine Biology and Ecology, 117 (3). pp. 271-278.
    Details
    Publication Date: 2018-03-21
    Description: In ecological studies, especially in those dealing with energy circulation in nature, determinations of the energy content of organisms are inevitable. Energy determinations are, however, laborious and time-consuming. Average conversion factors based on different species form various areas and seasons may often be a shortcut for overcoming this problem. To establish general energy conversion factors for aquatic invertebrate groups, we used 376 values of J · mg−1 DW and 255 values of J · mg−1 AFDW, representing 308 and 229 species, respectively. The dry-weight-to-energy factors were highly variable both within and between taxonomic groups, e.g.: Porifera, 6.1 J · mg−1 DW; insect larvae, 22.4 J · mg−1 DW (median values). The energy-conversion factors related to AFDW showed a much smaller dispersion with a minimum median value of 19.7 J · mg−1 AFDW (Ascidiacea) and a maximum of 23.8 J · mg−1 AFDW (insect larvae). Within taxonomic groups, the 95% confidence intervals (AFDW) were only a few percent of the median values. The use of energy-conversion factors based on AFDW is preferable due to their lower dispersion. For aquatic macrobenthic invertebrates, a general conversion factor of 23 J · mg−1 AFDW can be used.
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  • 70
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    Sonostratigraphic records from equatorial atlantic deep-sea carbonates: Paleoceanographic and climatic relationships (1988)
    Elsevier
    In:  Marine Geology, 83 . pp. 9-20.
    Details
    Publication Date: 2016-09-05
    Description: Paleoceanographic and stratigraphic methods, based on high-resolution compressional wave (p-wave) velocity measurements, have been applied to the studies of late Quaternary deep-sea carbonates in the western and eastern equatorial Atlantic. The measurements provide sonostratigraphic records in which changes in p-wave velocity parallel the changes from a glacial to an interglacial climate: Maxima in p-wave velocity (greater than 1540 m/s) occur during interglacial oxygen isotope stages 1, 5 and 7. Minima (1490 m/s) occur during glacial oxygen isotope stages 2, 4 and 6. Changes in p-wave velocity parallel past changes in carbonate accumulation and sediment coarse fraction, and allow a detailed core to core correlation. From these results two main patterns emerge: (1) In cores from shallower than 4300 m and from well above the present lysocline, large temporal changes in p-wave velocity parallel the production of planktonic foraminifera and the climatic history recorded in the sediments, and (2) below 4300 m, the position of the foraminiferal lysocline in the western equatorial Atlantic, large downcore p-wave velocity fluctuations gradually disappear due to dissolution of carbonate sediments. Dissolution also causes a distinct decrease in p-wave velocity and acoustic reflectivity in surface sediments across the present foraminiferal lysocline. Thus, past changes in the position of the foraminiferal lysocline or calcite compensation depth that caused distinct changes in reflectivity of sediments should lead to distinct reflectors within sediment columns. Their distribution can be utilized to map paleowater masses with different degrees of carbonate saturation.
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  • 71
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    Meso- and macrozooplankton communities in the Weddell Sea, Antarctica (1988)
    Springer
    In:  Polar Biology, 9 (1). pp. 17-35.
    Details
    Publication Date: 2018-03-21
    Description: The present paper describes composition and abundance of meso- and macrozooplankton in the epipelagic zone of the Weddell Sea and gives a systematic review of encountered species regarding results of earlier expeditions. Material was sampled from 6 February to 10 March 1983 from RV Polarstern with a RMT 1+8 m (320 and 4500 μm mesh size). In agreement with topography and water mass distribution three distinct communities were defined, clearly separated by cluster analysis: The Southern Shelf Community has lowest abundances (approx. 9000 ind./1000 m3). Euphausia crystallorophias and Metridia gerlachei are predominating. Compared with the low overall abundance the number of regularly occurring species is high (55) due to many neritic forms. Herbivores and omnivores are dominating (58% and 35%). The North-eastern Shelf Community has highest abundances (about 31 000 ind./1000 m3). It is predominated by copepodites I–III of Calanus propinquus and Calanoides acutus (61%). The faunal composition is characterized by both oceanic and neritic species (64). Fine-filter feeders are prevailing (65%). The Oceanic Community has a mean abundance of approximately 23 000 ind./1000 m3, consisting of 61 species. Dominances are not as pronounced as in the shelf communities. Apart from abundant species like Calanus propinquus, Calanoides acutus, Metridia gerlachei, Oithona spp. and Oncaea spp. many typical inhabitants of the Eastwind Drift are encountered. All feeding types have about the same importance in the Oceanic Community.
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  • 72
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    Food web interactions in lakes : proceedings of a workshop held at the University of Notre Dame, March 21 - 26, 1987 (1988)
    Springer
    In:  In: Complex interactions in Lake Communities. Springer, New York, USA, pp. 141-160. ISBN 0-387-96684-6
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    Publication Date: 2012-03-22
    Type: Book chapter , PeerReviewed
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  • 73
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    Hydrothermal silica chimney fields in the Galapagos Spreading Center at 86°W (1988)
    Elsevier
    In:  Earth and Planetary Science Letters, 89 (3-4). pp. 261-272.
    Details
    Publication Date: 2016-05-18
    Description: Silica chimneys were discovered in 1985 at 86°W in the rift valley of the Galapagos Spreading Center at 2600 m depth (“Cauliflower Garden”). The inactive chimneys lack any sulfides and consist almost entirely of amorphous silica (up to 96 wt.% SiO2, opal-A); Fe and Mn oxides are minor constituents. Oxygen isotope data show that formation of the silica chimneys took place at temperatures between 32°C (+29.9‰ δ18O) and 42°C (+27.8‰ δ18O).Th/Udating reveals a maximum age of 1440 ± 300y. Amorphous silica solubility relations indicate that the silica chimneys were formed by conductive cooling of pure hydrothermal fluids or by conductive cooling of a fluid/seawater mixture. Assuming equilibrium with quartz at 500 bars, initial fluid temperatures of more than 175°C (i.e., a concentration of 〉 182 ppm SiO2) were required to achieve sufficient supersaturation for the deposition of amorphous silica at 40°C and 260 bars. If the silica chimneys originate from the same or a similar fluid as higher-temperature ( 〈 300°C) sulfide-silica precipitates found nearby (i.e., 2.5 km away), then subsurface deposition of sulfides may have occurred.
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  • 74
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    Base Metal Sulfide Deposits in Sedimentary and Volcanic Enviroments : Proceedings of the DMG-GDMB-SGA-Meeting Aachen, 1985 (1988)
    Springer
    In:  , ed. by Friedrich, G. H. and Herzig, P. M. SGA Special Publication, 5 . Springer, Heidelberg, 290 pp. ISBN 3-540-18202-0
    Details
    Publication Date: 2016-05-31
    Type: Book , NonPeerReviewed
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  • 75
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    Magnesium in the marine sedimentary environment: Mg-NH4 ion exchange (1988)
    Elsevier
    In:  Chemical Geology, 70 (4). pp. 359-371.
    Details
    Publication Date: 2016-07-19
    Description: The release of exchangeable Mg in marine sediments from displacement by ammonium ions was estimated by way of experimentally determining the parameters that govern this ion-exchange equilibrium on solid geochemical phases: smectite, humic acid, illite and opal. We showed that: (a) both the conditional selectivity constant as well as the solid concentration are important parameters in determining the relative contribution of ammonium-exchangeable Mg from smectite, organic matter, illite and opal; and (b) that, except in the cases where opal or organic matter concentrations are very high, the clays are the dominant carrier phases for labile Mg which is exchangeable by ammonium. A model, based on the sum of the contributions from the major geochemical phases present in the sediment reliably predicts the amount of Mg released by exchange with ammonium in marine sediments.
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  • 76
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    Mg-NH4 exchange on humic acid: A radiotracer technique for conditional exchange constants in a seawater medium (1988)
    Elsevier
    In:  Chemical Geology, 70 (4). pp. 349-357.
    Details
    Publication Date: 2016-07-19
    Description: A radiotracer technique, employing 27Mg, is used to determine the Mg released by ammonium exchange on undis-solved humic acid in a seawater medium. This new method allows for the measurement of exchangeable Mg on the solid phase surface, which eliminates the problem caused by the high-Mg background in the seawater matrix. The precision calculated from the counting statistics is better than ±2%; the reproducibility among repeated counts ranged from ±1% to ±3%. The higher sensitivity of the method allows for monitoring the MgNH4 exchange at concentrations as low as 30 mM NH4. This is a major improvement relative to the data obtained with the analytical methods used so far, which allow detection of exchangeable Mg only at NH4 concentrations higher than 1 M. The lower experimental concentrations are more in accordance with the natural ammonium levels found in anoxic marine sediments. For the undissolved humic acid used in this experiment, the amount of exchangeable Mg in apparent equilibrium with an ammonium-free seawater matrix was found to be 96.6 ± 0.4 meq/100g. The Mg-NH4 exchange on humic acid in seawater comes to a steady-state value in 〈 18 min. The conditional equilibrium constant obtained for this reaction, Kcond = 0.039 ± 0.001 M−1. The technique can be expanded to other geochemical solid phases in seawater and it can be modified to study the behavior of the major cations by using 24Na, 42K and 49Ca.
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  • 77
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    Can the Greenland climatic jumps be identified in records from ocean and land? (1988)
    Elsevier
    In:  Quaternary Research, 30 (1). pp. 1-6.
    Details
    Publication Date: 2016-06-15
    Description: Sharp jumps in climate punctuate the records from borings in the Greenland ice cap during the time interval 60,000 to about 20,000 yr ago. Rapid fluctuations are also seen in foraminifera records for cores from the northern Atlantic and in a pollen record from a core from a bog in the Vosges Mountains in France. In this paper we present a new radiocarbon chronology for northern Atlantic deep-sea core V23-81 which permits comparison with the radiocarbon-dated Vosges Mountains pollen record. Because of the lack of a 14C chronology for the Greenland ice record and of distortions peculiar to each of the three records, it is not yet possible to say whether or not the events are genetically related.
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  • 78
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    A lateral line analogue in cephalopods: water waves generate microphonic potentials in the epidermal head lines of Sepia and Lolliguncula (1988)
    Springer
    In:  Journal of Comparative Physiology A, 164 . pp. 1-5.
    Details
    Publication Date: 2020-07-27
    Description: Many cephalopods have lines of ciliated cells on their head and arms. In the cuttlefish Sepia and the squid Lolliguncula, electrophysiological recordings clearly identify these epidermal lines as an invertebrate analogue to the mechanoreceptive lateral lines of fish and aquatic amphibians and thus as another example of convergent evolution between a sophisticated cephalopod and vertebrate sensory system. Stimulation of the epidermal lines with local water displacements, generated by a vibrating sphere, causes receptor potentials that have many features known from lateral line microphonic potentials. The minimal threshold of the head lines is 0.2 micron peak-to-peak water displacement (calculated at the skin surface) at 75-100 Hz.
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  • 79
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    Effect of temperature on laboratory growth, reproduction and life span of Octopus bimaculoides (1988)
    Springer
    In:  Marine Biology, 98 (3). pp. 369-379.
    Details
    Publication Date: 2020-07-14
    Description: Laboratory culture of 40 Octopus bimaculoides from April 1982 to August 1983 through the full life cycle at 18°C vs 23°C provided information on the growth, reproductive biology and life span of this California littoral octopus. At 18°C, the cephalopods grew from a hatchling size of 0.07 g to a mean of 619 g in 404 d; the largest individual was 872 g. Octopuses cultured at 23°C reached their highest mean weight of 597 g in 370 d; the largest individual grown at this temperature was 848 g after 404 d. Growth data revealed a two-phase growth pattern: a 5 mo exponential phase followed by a slower logarithmic (power function) phase until spawning. At 5 mo octopuses grown at 23°C were over three times larger than their 18°C siblings. However, beyond 6.5 mo, growth rates were no higher at 23°C than at 18°C. At 13.5 mo, the mean weight of the 18°C group surpassed that of the 23°C group. The slope of the length/weight (L/W) relationship was significantly different for the two temperature regimes, with the 23°C octopuses weighing 18% less than their 18°C siblings at a mantle length of 100 mm. Females weighed more than males at any given mantle length. Males grew slightly larger and matured before females. The L/W relationship indicated isometric body growth throughout the life cycle. Higher temperature accelerated all aspects of reproductive biology and shortened life span by as much as 20% (from approximately 16 to 13 mo). O. bimaculoides has one of the longest life cycles among species with large eggs and benthic hatchlings. Extrapolations to field growth are made, and the possible effects of temperature anomalies such as El Niño are discussed.
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  • 80
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    Effects of Pack Ice on the Composition of Micronektonic Communities in the Weddell Sea (1988)
    Springer
    In:  In: Antarctic Ocean and Resources Variability. , ed. by Sahrhage, D. Springer, Berlin, Germany, pp. 140-146. ISBN 978-3-642-73726-8
    Details
    Publication Date: 2020-06-11
    Description: Using seabirds as sampling devices on two cruises in the northwestern Weddell Sea, we investigated the species and lengthfrequency distribution of micronekton in surface waters. Our micronekton samples are among the first ever collected simultaneously in both ice-covered and adjacent ice-free waters in the Antarctic using the same technique. Changes in the abundance or presence of certain crustacean, squid, and fish species were related to the presence of ice, and to distance from the ice edge. Length-frequency distributions representing age- or sex-classes of fish and krill were also affected by proximity to the ice edge. Our data indicate that the proximity of sampling to pack ice may affect our perception of the composition of micronektonic communities, and that the marginal ice zone is an important area for juvenile age-classes of pelagic fish and krill.
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    Squid as Predators on Krill (Euphausia superba) and Prey for Sperm Whales in the Southern Ocean (1988)
    Springer
    In:  In: Antarctic Ocean and Resources Variability. , ed. by Sahrhage, D. Springer, Berlin, Germany, pp. 292-296. ISBN 978-3-642-73726-8
    Details
    Publication Date: 2020-06-11
    Description: This chapter deals with information on the role of squid, and on feeding by sperm whales on squid, in the Antarctic. Seasonal variation in the vertical distribution of krill swarms may possibly affect the distribution of smaller squid which feed on krill. Larger squid are distributed in deeper water layers where they do not feed on krill alone. Sperm whales eat larger squid in the deeper waters of the Southern Ocean. The diet of these larger squid is unknown. It is suggested that the food chain from krill to sperm whale has several links, including fish and squid. The importance of studies on deep-sea systems in the Southern Ocean is emphasized.
    Type: Book chapter , NonPeerReviewed
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  • 82
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    Age and growth of loliginid squid Photololigo edulis (Hoyle, 1885) (1988)
    Elsevier
    In:  Journal of Experimental Marine Biology and Ecology, 116 (2). pp. 177-190.
    Details
    Publication Date: 2019-02-22
    Description: Age and growth were estimated on two brood stocks of a loliginid squid, Photololigo edulis (Hoyle), by examining growth increments within the statoliths from 773 specimens. Samples were collected from the northwestern coast of Kyushu, Japan, and the southwestern coast of the Sea of Japan between January 1983 and June 1984. Length and age data were fitted to logistic growth curves for each sex and brood, under the assumption that increments formed daily. Relationships between age and mantle length and the modelled growth curves showed that: the posthatch life span may be 〈 1 yr; growth rates vary considerably between individuals, especially in the second half of life; the average growth rate of the male was higher than that of the female in the warm-season brood, but almost the same in the cold-season brood. Because of the wide variation in the individual growth rate, it was presumed that warm- and cold-season broods were not genetically discrete populations.
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  • 83
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    Investigation of the fauna of Seamounts of the Nazca and Sala y Gomez Ridges, Southeastern Pacific Ocean (18th cruise of the R/V Professor Shtokman, March 6-June 17,1987) (1988)
    Pleiades Publishing | Springer
    In:  Oceanology, 28 (6). pp. 803-805.
    Details
    Publication Date: 2020-11-04
    Type: Article , PeerReviewed
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  • 84
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    Some size relationships in phytoflagellate motility (1988)
    Springer
    In:  Hydrobiologia, 161 (1). pp. 125-131.
    Details
    Publication Date: 2018-06-29
    Description: Data from the literature are used to assess some hypothesised adaptive advantages of the flagellate life form among phytoplankton. Possible advantages include increased nutrient uptake by movement through a homogeneous medium as opposed to exploitation of spatial hetrogeneity of the environment. Maximal migrational amplitudes and maximal swimming velocities of phytoflagellates were compared to body size. Both were found to increase with size. Relative amplitudes and relative velocities, however, were found to decrease with size. Hydrophysical considerations show that additional gain of nutrients by swimming through a homogeneous medium is only minimal for small flagellates at their attainable swimming velocities. It is suggested that exploitation of environmental heterogeneity in nutrient distribution may be one of the most important advantages for flagellates over coccoid algae.
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  • 85
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    The species composition of Antarctic phytoplankton interpreted in terms of Tilman's competition theory (1988)
    Springer
    In:  Oecologia, 77 (4). pp. 464-467.
    Details
    Publication Date: 2017-10-10
    Description: An attempt was made, to test for the impact of resource competition on Antarctic marine phytoplankton. According to theory, species composition near competitive equilibrium should be determined by the ratios of limiting resources. Enrichment bioassays identified silicon and nitrogen as limiting nutrients for some of the most important phytoplankton species during early austral summer in the region near the Antarctic Peninsula. Together with the generally acknowledged limiting resource light, this gave three meaningful ratios of essential resources (Si:N, Si:light, N:light) and one ratio of substitutable resources (NO sub(3):NH sub(4)). Phytoplankton species assemblages were found to be well separated by the ratios of the essential resources and by mixing depth.
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  • 86
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    Well Logging for Earth Scientists (1987)
    Elsevier
    In:  New York, Elsevier, vol. 138, no. 2, pp. 125-169, (ISBN 0-7923-5034-0)
    Details
    Publication Date: 1987
    Keywords: Borehole geophys. ; Textbook of geophysics
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    BIBLIOGRAPHY SEISMOLOGY
  • 87
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    Methode der Randelemente - Boundary Elements in der Mechanik auf dem PC (1987)
    Springer
    In:  Berlin, Springer, vol. 113, no. XVI:, pp. 1-14, (0-13-186150-6)
    Details
    Publication Date: 1987
    Keywords: Boundary Element Method ; Modelling ; Handbook of physics ; Handbook of geophysics
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    BIBLIOGRAPHY SEISMOLOGY
  • 88
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    Encyclopedia of Structural Geology and Plate Tectonics (1987)
    Springer
    In:  Houston, Springer, vol. Developments in Petroleum Science vol. 15B, no. Publ. No. 12, pp. 9, (ISBN: 3-540-31080-0)
    Details
    Publication Date: 1987
    Keywords: Textbook of geology ; Structural geology ; Plate tectonics
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    BIBLIOGRAPHY SEISMOLOGY
  • 89
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    Transient Waves in Layered Media (1987)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 26, no. ALEX(01)-FR-77-01, AFTAC Contract F08606-76-C-0025, pp. 329, (ISBN: 0-08-043649-8)
    Details
    Publication Date: 1987
    Keywords: Seismology ; Seismics (controlled source seismology) ; Applied geophysics ; Layers
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  • 90
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    Scientific objectives and site-selection studies of the Continental Deep Drilling Program of the Federal Republic of Germany (KTB) (1987)
    Springer
    In:  Observation of the Continental Crust through Drilling II., Berlin, Springer, vol. 1, no. 16, pp. 85-120, (ISBN 0080419208)
    Details
    Publication Date: 1987
    Keywords: KTB ; Borehole geophys. ; Review article
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  • 91
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    Deep well formation logging - The problems. The logging tools (1987)
    Springer
    In:  Professional Paper, Observation of the Continental Crust through Drilling II., Berlin, Springer, vol. 65, no. 16, pp. 207-223, (ISBN 0080419208)
    Details
    Publication Date: 1987
    Keywords: Borehole geophys. ; Review article ; Instruments
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  • 92
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    Ground motion relations for eastern North American earthquakes (1987)
    Elsevier
    In:  Bull., Open-File Rept., Ground Motion and Engineering Seismology, Amsterdam, Elsevier, vol. 14, no. 86-425, pp. 231-241, (ISBN 0080419208)
    Details
    Publication Date: 1987
    Keywords: Seismology ; Strong motions
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    BIBLIOGRAPHY SEISMOLOGY
  • 93
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    Inverse Problem Theory - Methods for Data Fitting and Model Parameter Estimation (1987)
    Elsevier
    In:  Amsterdam, 613 pp., Elsevier, vol. 52, no. ALEX(01)-FR-77-01, AFTAC Contract F08606-76-C-0025, pp. 95-104, (ISBN: 0-08-044051-7)
    Details
    Publication Date: 1987
    Keywords: Inversion ; Textbook of mathematics ; Textbook of geophysics
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  • 94
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    Evolution of the continental crust in the Precambrian; History of tectonic development of the Pechenga region (1987)
    Springer
    In:  Bull., Polar Proj. OP-O3A4, The Superdeep Well of the Kola Peninsula, Berlin, Springer, vol. 81B, no. 1, pp. 293-303, (ISBN: 3-540-23712-7)
    Details
    Publication Date: 1987
    Keywords: Geol. aspects ; Borehole geophys.
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    BIBLIOGRAPHY SEISMOLOGY
  • 95
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    Applied Seismic Wave Theory (1987)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 1, pp. 225, (ISBN 3-7643-7011-4)
    Details
    Publication Date: 1987
    Keywords: Textbook of geophysics ; Applied geophysics ; Seismics (controlled source seismology)
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    BIBLIOGRAPHY SEISMOLOGY
  • 96
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    Applications of Tensor Functions in Solid Mechanics (1987)
    Springer
    In:  Wien, Springer, vol. 17, pp. 225, (ISBN 0-19-851393-3)
    Details
    Publication Date: 1987
    Keywords: Textbook of physics ; Textbook of geophysics ; Elasticity ; Textbook of mathematics
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  • 97
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    Surface Waves and Discontinuities (1987)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 16, no. 22, pp. 662-664, (ISBN 0-470-87000-1 (HB), ISBN 0-470-87001-X (PB))
    Details
    Publication Date: 1987
    Keywords: Surface waves ; Seismology ; Textbook of geophysics ; Wave propagation
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  • 98
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    Pattern recognition for earthquake detection by mental pictures (1987)
    Springer
    In:  Bull., Polar Proj. OP-O3A4, ASST'87, Berlin, Springer, vol. 81A, no. 16, pp. 347-350, (ISBN: 3-540-23712-7)
    Details
    Publication Date: 1987
    Keywords: Detectors ; Seismology ; Pattern recognition
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  • 99
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    Repräsentationsformen beim menschlichen Problemlösen (1987)
    Springer
    In:  Bull., Open-File Rept., GWAI-87, Berlin, Springer, vol. 16, no. 1, pp. 287-295, (ISBN 1-86239-165-3, vi + 330 pp.)
    Details
    Publication Date: 1987
    Keywords: Artificial intelligence (AI) ; knr ; COG
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  • 100
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    Molecular association of Cu, Zn, Cd and 210Po in the digestive gland of the squid Nototodarus gouldi (1987)
    Springer
    In:  Marine Biology, 95 (1). pp. 87-91.
    Details
    Publication Date: 2017-03-29
    Description: The squid Nototodarus gouldi (McCoy, 1888) was caught by bottom trawl in Port Phillip Bay, Australia in February 1985. The squid accumulates in its digestive gland high levels of trace metals, with up to 100 μg Cd g-1 dry tissue, 1 200 μg g-1 copper and 1 500 μg g-1 zinc and up to 24 Bq g-1 of the naturally occurring radionuclide polonium-210. The molecular binding of these elements in six squid was investigated using column chromatography. Two poorly resolved copper peaks were associated with proteins of average molecular weights of 11 500 and 18 000. The two squid containing the highest levels of cadmium in their digestive glands (44 and 88 μg g-1) had cadmium associated with a peak of molecular weight intermediate between the copper-binding peaks, but this peak was absent from squid containing lower levels of cadmium. Zinc was associated with ligands of less than 1 500 molecular weight. The 210Po eluted with proteins of greater than 70 000 molecular weight, and there was no evidence of binding to low molecular weight proteins. Different mechanisms appear to be involved in the binding and control of the four elements.
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