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  • 2000-2004  (30)
  • 1980-1984
  • 2003  (30)
Document type
Keywords
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  • 2000-2004  (30)
  • 1980-1984
Year
  • 1
    Electronic Resource
    Electronic Resource
    Global change Monsoon linkages (2003)
    [s.l.] : Nature Publishing Group
    Nature 421 (2003), S. 324-325 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The monsoon is the main determinant of environmental conditions over much of Asia, and so affects the most densely populated region on Earth. Differential heating of the north Indian Ocean and the northwest Pacific, and of the Asian land-mass, cause the seasonal reversal of monsoon winds. In ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/421324a
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Global change: Monsoon linkages (2003)
    Nature Publishing Group
    In:  Nature, 421 (6921). pp. 324-325.
    Details
    Publication Date: 2016-07-19
    Description: An excellent sediment record from the Arabian Sea traces recent patterns in the activity of the Asian monsoon. It reveals both variability in monsoon strength and links with climatic events elsewhere. The monsoon is the main determinant of environmental conditions over much of Asia, and so affects the most densely populated region on Earth. Differential heating of the north Indian Ocean and the northwest Pacific, and of the Asian land-mass, cause the seasonal reversal of monsoon winds. In summer, these winds blow northwards over the northern Indian Ocean, carrying huge amounts of moisture over the neighbouring land. The ensuing heavy rainfall can have devastating consequences for human life and livelihood. Conversely, agriculture in Asia depends on monsoon rains; and the seasonal upwelling of nutrient-laden subsurface waters, driven by monsoon winds, is essential to the success of coastal fisheries.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1038/421324a
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
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    Surface and deep water response to rapid climate changes at the Western Iberian Margin (2003)
    Elsevier
    In:  Global and Planetary Change, 36 . pp. 237-264.
    Details
    Publication Date: 2017-09-13
    Description: Rapid climate changes at the onset of the last deglaciation and during Heinrich Event H4 were studied in detail at IMAGES cores MD95-2039 and MD95-2040 from the Western Iberian margin. A major reorganisation of surface water hydrography, benthic foraminiferal community structure, and deepwater isotopic composition commenced already 540 years before the Last Isotopic Maximum (LIM) at 17.43 cal. ka and within 670 years affected all environments. Changes were initiated by meltwater spill in the Nordic Seas and northern North Atlantic that commenced 100 years before concomitant changes were felt off western Iberia. Benthic foraminiferal associations record the drawdown of deepwater oxygenation during meltwater and subsequent Heinrich Events H1 and H4 with a bloom of dysoxic species. At a water depth of 3380 m, benthic oxygen isotopes depict the influence of brines from sea ice formation during ice-rafting pulses and meltwater spill. The brines conceivably were a source of ventilation and provided oxygen to the deeper water masses. Some if not most of the lower deep water came from the South Atlantic. Benthic foraminiferal assemblages display a multi-centennial, approximately 300-year periodicity of oxygen supply at 2470-m water depth. This pattern suggests a probable influence of atmospheric oscillations on the thermohaline convection with frequencies similar to Holocene climate variations. For Heinrich Events H1 and H4, response times of surface water properties off western Iberia to meltwater injection to the Nordic Seas were extremely short, in the range of a few decades only. The ensuing reduction of deepwater ventilation commenced within 500–600 years after the first onset of meltwater spill. These fast temporal responses lend credence to numerical simulations that indicate ocean–climate responses on similar and even faster time scales.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/S0921-8181(02)00197-2
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 4
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    (Table 1) Age model of ODP Core 161-977A from the western Mediterranean Sea (2003)
    PANGAEA
    Details
    Publication Date: 2023-07-20
    Keywords: 161-977A; Age, comment; Age, dated; Ageprofile Datum Description; Alboran Sea; DEPTH, sediment/rock; DRILL; Drilling/drill rig; IMAGES; International Marine Global Change Study; Joides Resolution; Leg161
    Type: Dataset
    Format: text/tab-separated-values, 24 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    (Appendix 3) Stable oxygen isotope ratios of Globigerina bulloides during the last 70 kyr of ODP Core 161-977A from the western Mediterranean Sea (2003)
    PANGAEA
    Details
    Publication Date: 2023-07-20
    Keywords: 161-977A; Alboran Sea; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Globigerina bulloides, δ18O; IMAGES; International Marine Global Change Study; Joides Resolution; Leg161; Mass spectrometer Finnigan MAT 251
    Type: Dataset
    Format: text/tab-separated-values, 99 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    (Appendix 1) Distribution of planktonic foraminifera in sediment of the last 70 kyr of ODP Core 161-977A from the western Mediterranean Sea (2003)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 161-977A; Alboran Sea; Beella digitata; Counting, foraminifera, planktic; Counting 〉150 µm fraction; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Foraminifera, planktic; Foraminifera, planktic, other; Globigerina bulloides; Globigerina calida; Globigerina falconensis; Globigerina rubescens; Globigerinella siphonifera; Globigerinita glutinata; Globigerinita iota; Globigerinoides ruber pink; Globigerinoides ruber white; Globigerinoides sacculifer; Globigerinoides tenellus; Globorotalia inflata; Globorotalia scitula; Globorotalia truncatulinoides; IMAGES; International Marine Global Change Study; Joides Resolution; Leg161; Neogloboquadrina dutertrei; Neogloboquadrina pachyderma dextral; Neogloboquadrina pachyderma dextral and dutertrei integrade; Neogloboquadrina pachyderma sinistral; Ocean Drilling Program; ODP; Orbulina universa; SESAME; Southern European Seas: Assessing and Modelling Ecosystem Changes; Turborotalita quinqueloba
    Type: Dataset
    Format: text/tab-separated-values, 3105 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Mg/Ca ratio and sea-surface temperature (SST) of sediment core MD97-2120 (2003)
    PANGAEA
    Details
    Publication Date: 2024-04-16
    Keywords: CALYPSO; Calypso Corer; Chatham Rise; DEPTH, sediment/rock; Estimated; IMAGES; IMAGES III - IPHIS; Inductively coupled plasma atomic emission spectroscope (ICP-AES); International Marine Global Change Study; Magnesium/Calcium ratio; Marion Dufresne (1995); MD106; MD972120; MD97-2120; Sea surface temperature, annual mean
    Type: Dataset
    Format: text/tab-separated-values, 730 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    (Table 1) Age comparison between the GPTS and ODP Site 181-1123 age model for each chron base within the Middle Miocene section (2003)
    PANGAEA
    In:  Supplement to: Hall, Ian R; McCave, I Nick; Zahn, Rainer; Carter, Lionel; Knutz, Paul Cornils; Weedon, Graham P (2003): Paleocurrent reconstruction of the deep Pacific inflow during the middle Miocene: Reflections of East Antarctic Ice Sheet growth. Paleoceanography, 18(2), 1040, https://doi.org/10.1029/2002PA000817
    Details
    Publication Date: 2024-05-18
    Description: Today the deep western boundary current (DWBC) east of New Zealand is the most important route for deep water entering the Pacific Ocean. Large-scale changes in deep water circulation patterns are thought to have been associated with the development of the East Antarctic Ice Sheet (EAIS) close to the main source of bottom water for the DWBC. Here we reconstruct the changing speed of the southwest Pacific DWBC during the middle Miocene from ~15.5-12.5 Ma, a period of significant global ice accumulation associated with EAIS growth. Sortable silt mean grain sizes from Ocean Drilling Program Site 1123 reveal variability in the speed of the Pacific inflow on the timescale of the 41 kyr orbital obliquity cycle. Similar orbital period flow changes have recently been demonstrated for the Pleistocene epoch. Collectively, these observations suggest that a strong coupling between changes in the speed of the deep Pacific inflow and high-latitude climate forcing may have been a persistent feature of the global thermohaline circulation system for at least the past 15 Myr. Furthermore, long-term changes in flow speed suggest an intensification of the DWBC under an inferred increase in Southern Component Water production. This occurred at the same time as decreasing Tethyan outflow and major EAIS growth between ~15.5 and 13.5 Ma. These results provide evidence that a major component of the deep thermohaline circulation was associated with the middle Miocene growth of the EAIS and support the view that this time interval represents an important step in the development of the Neogene icehouse climate.
    Keywords: 181-1123B; Age, difference; Age model; Age model, Berggren et al (1995) BKSA95; Age model, optional; Chronozone; Depth, composite revised; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg181; Ocean Drilling Program; ODP; Sample code/label; South Pacific Ocean
    Type: Dataset
    Format: text/tab-separated-values, 96 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    Planktonic foraminiferal distribution during the last 70 kyr in the western Mediterranean Sea (2003)
    PANGAEA
    In:  Supplement to: Pérez-Folgado, Marta; Sierro, Francisco Javier; Flores, José-Abel; Cacho, Isabel; Grimalt, Joan O; Zahn, Rainer; Shackleton, Nicholas J (2003): Western Mediterranean planktonic foraminifera events and millennial climatic variability during the last 70 kyr. Marine Micropaleontology, 48(1-2), 49-70, https://doi.org/10.1016/S0377-8398(02)00160-3
    Details
    Publication Date: 2024-06-25
    Description: Detailed study of associations of planktonic foraminifera in cores MD95-2043 and ODP 977, located in the Alboran Sea (Mediterranean Sea), has allowed the identification of 29 new faunal events,defined by abrupt changes in the abundances of Neogloboquadrina pachyderma (right and left coiling), Turborotalita quinqueloba, Globorotalia scitula, Globorotalia inflata, Globigerina bulloides and Globigerinoides ruber (white and pink varieties). The age model for ODP 977 was based on that of MD95-2043 [Cacho et al. (1999),Paleoceanogr. 14, 698-705], on the isotopic stratigraphy,and on two AMS 14C measurements. Sea Surface Temperatures (SSTs) were estimated for the last 54 kyr using the Modern Analog Technique (MAT) and were compared with the SSTs provided by the U37(k0) method. The U37(k0) record is very similar to the MAT annual mean temperature record for the last 8 kyr. However, for older times alkenone-derived temperatures are consistently higher than the annual MAT temperatures. This offset may be due to an underestimation of the SST provided by the planktonic foraminiferal method for glacial times, to an overestimation of the U37(k0) record, or to changes in the seasonal production of alkenones. Most of the variability in the fauna is related to the millennial variability of Heinrich and Dansgaard-Oeschger (D-O) events. During Heinrich events (HEs) and most of the other D-O stadials, G. bulloides, T. quinqueloba and G. scitula increased, while N. pachyderma (right coiling), G. inflata and G. ruber decreased. By contrast, N. pachyderma (left coiling) was only abundant in the HEs. The main component of the associations -N. pachyderma (right coiling) - follows a general trend similar to that of sea-level and delta18O. This species reached its highest abundance during the Last Glacial Maximum, when sea-level was at a lower position. The occurrence of a shallower nutricline owing to a shallowing of the interface between Atlantic inflowing and Mediterranean outflowing waters could have favoured the development of neogloboquadrinids in the vicinity of the Strait of Gibraltar.
    Keywords: 161-977A; Alboran Sea; CALYPSO; Calypso Corer; DRILL; Drilling/drill rig; IMAGES; IMAGES I; International Marine Global Change Study; Joides Resolution; Leg161; Marion Dufresne (1995); MD101; MD952043; MD95-2043; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    Stable isotope ratios and foraminiferal abundance of sediment cores from the Western Iberian Margin (2003)
    PANGAEA
    In:  Supplement to: Schönfeld, Joachim; Zahn, Rainer; de Abreu, Lucia (2003): Surface to deep water response to rapid climate changes at the western Iberian Margin. Global and Planetary Change, 36(4), 237-264, https://doi.org/10.1016/S0921-8181(02)00197-2
    Details
    Publication Date: 2024-06-25
    Description: Rapid climate changes at the onset of the last deglaciation and during Heinrich Event H4 were studied in detail at IMAGES cores MD95-2039 and MD95-2040 from the Western Iberian margin. A major reorganisation of surface water hydrography, benthic foraminiferal community structure, and deepwater isotopic composition commenced already 540 years before the Last Isotopic Maximum (LIM) at 17.43 cal. ka and within 670 years affected all environments. Changes were initiated by meltwater spill in the Nordic Seas and northern North Atlantic that commenced 100 years before concomitant changes were felt off western Iberia. Benthic foraminiferal associations record the drawdown of deepwater oxygenation during meltwater and subsequent Heinrich Events H1 and H4 with a bloom of dysoxic species. At a water depth of 3380 m, benthic oxygen isotopes depict the influence of brines from sea ice formation during ice-rafting pulses and meltwater spill. The brines conceivably were a source of ventilation and provided oxygen to the deeper water masses. Some if not most of the lower deep water came from the South Atlantic. Benthic foraminiferal assemblages display a multi-centennial, approximately 300-year periodicity of oxygen supply at 2470-m water depth. This pattern suggests a probable influence of atmospheric oscillations on the thermohaline convection with frequencies similar to Holocene climate variations. For Heinrich Events H1 and H4, response times of surface water properties off western Iberia to meltwater injection to the Nordic Seas were extremely short, in the range of a few decades only. The ensuing reduction of deepwater ventilation commenced within 500-600 years after the first onset of meltwater spill. These fast temporal responses lend credence to numerical simulations that indicate ocean-climate responses on similar and even faster time scales.
    Keywords: CALYPSO; Calypso Corer; IMAGES; IMAGES I; International Marine Global Change Study; Marion Dufresne (1995); MD101; MD952039; MD95-2039; MD952040; MD95-2040; Porto Seamount; Western Iberian Margin
    Type: Dataset
    Format: application/zip, 19 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
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