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  • 1
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Marine geophysics. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (290 pages)
    Edition: 1st ed.
    ISBN: 9783030406592
    Series Statement: Society of Earth Scientists Series
    DDC: 353.00823200000002
    Language: English
    Note: Intro -- Series Editor Foreword -- Foreword -- Preface -- Contents -- About the Editors -- Introduction-Scientific Drilling in the Indian Ocean: An Earth System Process Perspective -- 1 Himlayan-Tibetan Orogeny and Long Term Climate Evolution -- 1.1 Indian Monsoon Rainfall (IODP Expedition 353) -- 1.2 Bengal Fan -- 1.3 Indus Fan -- 2 The Indonesian Throughflow Expedtion -- 2.1 Indonesian Throughflow (ITF) and the Australian Monsoon -- 3 Maldives and Equatorial Indian Ocean -- 3.1 Maldives Monsoon and Sea Level -- 4 South African Climates -- 4.1 The South African Climates and Agulhas Current Density Profile -- 5 Plate Deformation Zones -- 5.1 "The Nature of the Lower Crust and Moho at Slower Spreading Ridges"-SloMo -- 5.2 To Understand the Role of Input Materials in the Northern Sumatra Subduction -- 6 Concluding Remarks -- References -- Morphological and Chemical Properties of Microtektite Grains from Bay of Bengal (IODP Expedition 354) -- 1 Introduction -- 2 Materials and Methods -- 3 Results and Discussion -- 4 Morphological Characteristics of the Microtektites -- 5 Shapes, Size and Color -- 6 Surface Sculpturing -- 7 Compositional Characteristics of Microtektites -- 8 Evidence of Extraterrestrial Materials Within the Microtektite Layer -- 9 Conclusions -- References -- Assessing Mid-pleistocene to Holocene Sea-Ice Extent and Carbonate Compensation Depth Fluctuations in the Japan Sea: A Multiproxy Approach -- 1 Introduction -- 2 Location, Lithology, and Hydrography of Japan Sea -- 2.1 Material and Methods -- 3 Results -- 3.1 Distribution of IRD and Detrital -- 3.2 Distribution of Foraminifera -- 3.3 Environmental Preferences of Dominant Planktic Species -- 4 Discussion -- 5 Conclusion -- References -- Modern Radiolarians Recovered from the Mudline Samples at IODP-341 Sites in the South Alaska Basin, North East Pacific Ocean -- 1 Introduction. , 2 Radiolarians from Mudline Samples -- 3 Results -- 3.1 Radiolarians in the Mudline, Hole U1417D -- 3.2 Radiolarians in the Mudline, Hole U1418C -- 3.3 Radiolarians in the Mudline Hole U1419A -- 3.4 Radiolarians in the Mudline, Hole U1421A -- 4 Conclusion -- References -- Carbon Stable Isotope Source Signature of Bulk Organic Matter in Middle Bengal Fan Sediment Collected During IODP Expedition 354 -- 1 Introduction -- 2 Site -- 3 Materials and Method -- 4 Results -- 4.1 TOC, N, C/N Ratio and δ13C of Sedimentary OM -- 5 Discussion -- 5.1 Preservation of OM -- 5.2 Source of OM -- 6 Conclusion -- References -- Geochemistry of Marine Carbonates from Hole 1394, off the Coast of Montserrat, IODP Expedition-340 -- Implications on Provenance, Paleoenvironment and Lesser Antilles Arc Migration -- 1 Introduction -- 2 Materials and Methods -- 3 Stratigraphy and Nature of Sediments -- 4 Results -- 4.1 Geochemistry -- 5 Discussion -- 5.1 Europium Anomalies (Eu/Eu*) -- 5.2 Cerium Anomalies (Ce/Ce*) -- 5.3 Er/Nd Ratios -- 5.4 Age of the Carbonates -- 5.5 Depth Wise Variation in Geochemical Parameters -- 5.6 Source Weathering and Alteration Characteristics -- 5.7 Contamination and Diagenetic Alterations -- 5.8 Temperate (Cool Water) Versus Tropical (Warm Water) Carbonates -- 5.9 Th/U Ratios -- 5.10 Paleo-redox Characteristics -- 5.11 Total Carbon and Carbonate Content -- 5.12 Shifting of Platformal Carbonates to Deep Ocean: Evidence from Ce and La (Pr/Pr*) Anomalies -- 5.13 Tectonic Setting -- 6 Conclusions -- References -- Morpho-taxonomy of Corycaeid Cyclopoids from Lakshadweep Sea, South Eastern Arabian Sea-A Part of the Indian Ocean -- 1 Introduction -- 2 Materials and Methods -- 3 Results -- 4 Discussion and Conclusion -- References. , Sedimentological Attributes and Quartz Microtexture in the Levee Sediments of a Submarine Channel in Context of the East Antarctic Ice Sheet Fluctuations: A Study from Site U-1359 of IODP-318 Expedition -- 1 Introduction -- 2 Site U1359 -- 3 Materials and Methods -- 4 Results -- 4.1 Grain Size Analysis -- 4.2 Quartz Grain Microtextures -- 5 Discussion -- 5.1 Sedimentary Processes -- 5.2 Depositional Environment -- 6 Conclusions -- References -- Late Quaternary Sedimentation and Slope Failure Events on the Costa Rican Margin -- 1 Introduction -- 2 Materials and Methods -- 2.1 Samples and Data -- 2.2 Sample Processing for XRD Analysis -- 2.3 Quantification of Clay Minerals -- 2.4 Sample Processing for XRF Analysis -- 2.5 Sample Processing for IRMS Analysis -- 2.6 Age Model -- 3 Results and Discussion -- 3.1 Clay Minerals -- 3.2 Quantification of Major Elements -- 3.3 Carbon and Nitrogen Isotopes -- 4 Summary and Conclusions -- References -- mtCOI Sequence-Based Barcoding of Calanoid Copepods from Lagoon Waters of Lakshadweep, South-west Coast of India -- 1 Introduction -- 2 Materials and Methods -- 3 Results -- 3.1 Molecular Records and Systematics of the Calanoid Copepods -- 3.2 Barcode Library Developed for the Calanoid Copepods -- 4 Discussion -- References -- A Summary of the South China Sea Evolution -- 1 Introduction -- 2 Regional Geological Setting -- 3 Evolution History -- 4 Dynamics of the South China Sea -- 4.1 The Tectonic Extrusion Model -- 4.2 Backarc Extension Model -- 4.3 Two-Stage Rifting Model -- 4.4 Proto-SCS Dragging Model -- 4.5 Models that Involve Extension Induced by Mantle Plume -- 4.6 Combined Model -- References -- Microbial Community Profile of Deep-Sea Sediment from Eastern Arabian Sea (IODP 355) -- 1 Introduction -- 2 Materials and Methods -- 2.1 Deep Sea Sediment Cores IODP -- 2.2 DNA Extraction. , 2.3 16S rRNA Gene Sequencing -- 3 Quality Control, Taxonomic Assignment, Diversity Estimation and Total Cell Counts -- 4 Result and Discussion -- 4.1 Total Cell Counts -- 4.2 Taxonomic Assignment and Microbial Diversity -- References.
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  • 2
    Keywords: Geochemistry. ; Paleontology . ; Sedimentology. ; Aufsatzsammlung ; Integrated Ocean Drilling Program ; Indien ; Geowissenschaftler ; Meeresgeologie
    Description / Table of Contents: Scientific drilling in the Indian Ocean: An Earth system process perspective -- Morphological and chemical properties of microtektite grains from Bay of Bengal (IODP Expedition 354) -- Assessing Mid-Pleistocene to Holocene Sea-ice Extent and Carbonate Compensation Depth fluctuations in the Japan Sea: a multiproxy approach -- Modern Radiolarians Recovered from the mudline samples at IODP-341 sites in the South Alaska Basin, North East Pacific Ocean -- Carbon Stable Isotope Source Signature of Bulk Organic Matter in Middle Bengal Fan Sediment Collected During IODP Expedition 354 -- Geochemistry of Marine Carbonates from Hole 1394, off the coast of Montserrat, IODP Expedition-340; Implications on provenance, paleoenvironment and Lesser Antilles arc migration -- Morpho-taxonomy of Corycaeid cyclopoids from Lakshadweep Sea, South Eastern Arabian Sea- a part of the Indian Ocean -- Sedimentological attributes and quartz microtexture in the levee sediments of a submarine channel in context of the East Antarctic ice sheet fluctuations: A study from site U-1359 of IODP-318 expedition -- Late Quaternary sedimentation and slope failure events on the Costa Rican margin -- Mt COI sequence-based barcoding of calanoid copepods from lagoon waters of Lakshadweep, South-West coast of India -- A Summary of the South China Sea Evolution -- Microbial Community Profile and Deep-sea sediment of Eastern Arabian Sea (IODP 355).
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource(XIV, 283 p. 121 illus., 80 illus. in color.)
    Edition: 1st ed. 2020.
    ISBN: 9783030406592
    Series Statement: Society of Earth Scientists Series
    Language: English
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  • 3
    Publication Date: 2023-02-08
    Description: Highlights: • Assessment of the Indian Ocean simulation from global forced sea- ice models. • SST biases are 2 times smaller in forced simulations than the coupled simulations. • Coupled model shows large inter-model spread over the eastern equatorial Indian Ocean. • Refinement in model horizontal resolution does not significantly improve simulations. • Uncover a secondary pathway of northward cross-equatorial transport along 75 °E. • Models are unable to capture the observed thick barrier layer in the north Bay of Bengal. Abstract: We present an analysis of annual and seasonal mean characteristics of the Indian Ocean circulation and water masses from 16 global ocean–sea-ice model simulations that follow the Coordinated Ocean-ice Reference Experiments (CORE) interannual protocol (CORE-II). All simulations show a similar large-scale tropical current system, but with differences in the Equatorial Undercurrent. Most CORE-II models simulate the structure of the Cross Equatorial Cell (CEC) in the Indian Ocean. We uncover a previously unidentified secondary pathway of northward cross-equatorial transport along 75 °E, thus complementing the pathway near the Somali Coast. This secondary pathway is most prominent in the models which represent topography realistically, thus suggesting a need for realistic bathymetry in climate models. When probing the water mass structure in the upper ocean, we find that the salinity profiles are closer to observations in geopotential (level) models than in isopycnal models. More generally, we find that biases are model dependent, thus suggesting a grouping into model lineage, formulation of the surface boundary, vertical coordinate and surface salinity restoring. Refinement in model horizontal resolution (one degree versus degree) does not significantly improve simulations, though there are some marginal improvements in the salinity and barrier layer results. The results in turn suggest that a focus on improving physical parameterizations (e.g. boundary layer processes) may offer more near-term advances in Indian Ocean simulations than refined grid resolution.
    Type: Article , PeerReviewed
    Format: text
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