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Basalt density, basement age, and intrusive/extrusive relations from DSDP Legs 2 through 7, 9, and 14 (1973)

Salisbury, Matthew H ; Christensen, Nikolas I

PANGAEA

In: Supplement to: Salisbury, Matthew H; Christensen, Nikolas I (1973): Progressive weathering of submarine basalt with age: further evidence of sea-floor spreading. Geology, 1(2), 63 - 64, https://doi.org/10.1130/0091-7613(1973)1%3C63:PWOSBW%3E2.0.CO;2

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Publication Date: 2024-07-01

Description: Densities of layer 2 basalt recovered during the Deep Sea Drilling Project have been found to decrease steadily with age, a finding ascribed to progressive submarine weathering in the context of sea-floor spreading. The least-squares solution for 52 density measurements gives a rate of decrease in density of (Delta p)/(Delta t) = -0.0046 g per ccm m.y. = -16 percent per 100 m.y., which is in excellent agreement with earlier estimates based on observed chemical depletion rates of dredged oceanic basalt. Weathering of sea-floor basalt, should it penetrate to any considerable depth in layer 2, will decrease layer 2 seismic refraction velocities, act as a source of geothermal heat, and substantially influence the chemistry of sea water and the overlying column of sediment.

Keywords: 14-136; 14-137; 14-138; 14-141; 2-10; 3-14; 3-15; 3-18; 3-19; 4-23; 5-32; 5-36; 6-54; 6-57; 7-61; 7-63; 7-66; 9-77B; 9-79; 9-82; 9-83; 9-84; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg14; Leg2; Leg3; Leg4; Leg5; Leg6; Leg7; Leg9; North Atlantic/CONT RISE; North Atlantic/DIAPIR; North Atlantic/HILL; North Pacific; North Pacific/BASIN; North Pacific/HILL; North Pacific/Philippine Sea/RIDGE; North Pacific/PLAIN; North Pacific/RIDGE; North Pacific/VALLEY; South Atlantic/CONT RISE; South Atlantic/HILL; South Atlantic/PLAIN; South Atlantic/RIDGE

Type: Dataset

Format: application/zip, 22 datasets

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Water temperature reconstructions based on paired Uk'37 and Tex86 records, and paired surface and subsurface Mg/Ca records (2016)

Laepple, Thomas ; Ho, Sze Ling

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In: Supplement to: Ho, Sze Ling; Laepple, Thomas (2016): Flat meridional temperature gradient in the early Eocene in the subsurface rather than surface ocean. Nature Geoscience, https://doi.org/10.1038/ngeo2763

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Publication Date: 2024-07-01

Description: This dataset contains the collection of available published paired Uk'37 and Tex86 records spanning multi-millennial to multi-million year time scales, as well as a collection of Mg/Ca-derived temperatures measured in parallel on surface and subsurface dwelling foraminifera, both used in the analyses of Ho and Laepple, Nature Geoscience 2016. As the signal-to-noise ratios of proxy-derived Holocene temperatures are relatively low, we selected records that contain at least the last deglaciation (oldest sample 〉18kyr BP).

Keywords: 130-806; 138-850; 145-882; 161-977A; 165-999A; 175-1085; 184-1143; 184-1146; 184-1147; 202-1239; 202-1240; 202-1241; 202-1241C; 293G; 313; 64PE-174P13; 77; Alboran Sea; Arabian Sea; AUSCAN; AWI_PerDyn; Benguela Current, South Atlantic Ocean; CALYPSO; CALYPSO2; Calypso Corer; Calypso Corer II; Caribbean Sea; CD129; Charles Darwin; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Eastern Mediterranean, Continental slope off Israel; Elevation of event; Equatorial East Pacific; Event label; GC; GeoB10038-4; GeoB12610-2; GeoB7702-3; GeoB7926-2; GeoB9528-3; GEOSCIENCES, MARMARCORE; Giant piston corer; GPC; Gravity corer; Gravity corer (Kiel type); Guaymas Basin; IMAGES III - IPHIS; IMAGES IV-IPHIS III; IMAGES VIII - MONA; IMAGES VII - WEPAMA; IMAGES XII - MARCO POLO; IMAGES XIV - MARCO POLO 2; Joides Resolution; KAL; Kasten corer; KL-74, AS-12; Latitude of event; Leg130; Leg138; Leg145; Leg161; Leg165; Leg175; Leg184; Leg202; Longitude of event; M52/2; M53/1; M65/1; M75/2; M75/2_97-2; Marion Dufresne (1995); MD012378; MD01-2378; MD012390; MD01-2390; MD01-2461; MD022515; MD02-2515; MD032607; MD03-2607; MD052904; MD05-2904; MD06-3067; MD104; MD106; MD111; MD122; MD123; MD126; MD131; MD147; MD155; MD96-2048; MD972146; MD97-2146; MD972151; MD97-2151; MD982195; MD98-2195; Meteor (1986); Method comment; Mindanao; NIOP-C2; NIOP-C2_905_PC; North Pacific Ocean; North-West African margin; PABESIA; PC; PEGASE; Pemba Channel; Permafrost Research (Periglacial Dynamics) @ AWI; Persistent Identifier; Piston corer; Professor Logachev; Reference/source; SL; SO184/1; SO18460; SO185; SO213/2; SO213/2_59-2; SO42; SO42-74KL; Sonne; SOPATRA; South China Sea; Southern Ocean; South Pacific Ocean; Species; SW Indian Ocean; Timor Sea; TTR-12_293G; TTR-12/3; Tyro; V12; V12-107; Vema; VITAL; Walvis Ridge; WIND; WIND-28K

Type: Dataset

Format: text/tab-separated-values, 159 data points

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Velocities and elastic moduli of basalts from Pacific DSDP sites (1973)

Christensen, Nikolas I ; Salisbury, Matthew H

PANGAEA

In: Supplement to: Christensen, Nikolas I; Salisbury, Matthew H (1973): Velocities, elastic moduli and weathering-age relations for Pacific Layer 2 basalts. Earth and Planetary Science Letters, 19(4), 461-470, https://doi.org/10.1016/0012-821X(73)90190-8

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Publication Date: 2024-07-01

Description: Compressional (Vp) and shear (Vs) wave velocities have been measured to 10 kb in 32 cores of basalt from 14 Pacific sites of the Deep Sea Drilling Project. Both Vp and V s show wide ranges (3.70 to 6.38 km/sec for Vp and 1.77 to 3.40 km/sec for V s at 0.5 kb) which are linearly related to density and sea floor age, confirming earlier findings by Christensen and Salisbury of decreasing velocity with progressive submarine weathering based on studies of basalts from five sites in the Atlantic. Combined Pacific and Atlantic data give rates of decreasing velocity of -1.89 and -1.35 km/sec per 100 my for Vp and Vs respectively. New analyses of oceanic seismic refraction data indicate a decrease in layer 2 velocities with age similar to that observed in the laboratory, suggesting that weathering penetrates to several hundred meters in many regions and is largely responsible for the extreme range and variability of layer 2 refraction velocities.

Keywords: 5-32; 5-34; 5-36; 6-54; 6-57; 7-61; 7-61A; 7-63; 7-66; 9-77B; 9-79; 9-82; 9-83; 9-84; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg5; Leg6; Leg7; Leg9; North Pacific; North Pacific/BASIN; North Pacific/HILL; North Pacific/Philippine Sea/RIDGE; North Pacific/PLAIN; North Pacific/RIDGE; North Pacific/VALLEY

Type: Dataset

Format: application/zip, 3 datasets

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Geochemistry on sediments off NE Greenland (2015)

Notholt, Hanne

PANGAEA

In: Supplement to: Notholt, Hanne (1998): Die Auswirkungen der NorthEastWater-Polynya auf die Sedimentation vor NO-Grönland und Untersuchungen zur Paläo-Ozeanographie seit dem Mittelweichsel (The Implication of the NorthEastWater-Polynya on the Sedimentation by NE-Greenland and Late Quaternary Paleo-oceanic Investigations). Berichte zur Polarforschung = Reports on Polar Research, 275, 183 pp, https://doi.org/10.2312/BzP_0275_1998

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Publication Date: 2024-07-01

Description: Sedimentation and the early diagenetic processes have been studied in surface sediments from the NE-Greenland shelf and continental slope. I have used these data together with geochemical and sedimentological investigations from seven long sediment cores from the NE- and E-Greenland continental margin between 80' and 72' N for reconstructing the paleoenvironmental history of the East- Greenland-Current (ff).

Keywords: Amdrup Land; Amdrups Land, Sophus Müllers Næs; ARK-IX/3; ARK-V/3b; AWI_Paleo; AWI_PerDyn; AWI Arctic Land Expedition; Germania Land; GIK21733-2 PS13/240; GIK21734-2 PS13/247; GIK21735-1 PS13/249; GL-Land_1993; Gravity corer (Kiel type); Greenland1993; HAND; Hertugen af Orleans Land; Holm Land; Holms Land, Eskimonæs; Holms Land, Mallemukfjeldet; Hovgaard Oe; Khatanga River; King Oskar Fjord; Kongsfjorden, Spitsbergen, Arctic; Kronprins Chr. Land, Dijmphna Sund; Lamberts Land; MUC; MultiCorer; Nakkehoved; Northeast Greenland; Notholt_A; Notholt_B; Notholt_C; Notholt_D; Notholt_E; Notholt_F; Notholt_H; Notholt_I; Notholt_J; Notholt_K; Notholt_L; Notholt_M; Notholt_N; Notholt_O; Notholt_P; Notholt_Q; Notholt_R; Notholt_S; Notholt_T; Notholt_U; Notholt_V; Notholt_W; Notholt_X; Ny-Ålesund, Spitsbergen; Ossiar Sarsfjellet; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Permafrost Research (Periglacial Dynamics) @ AWI; Polarstern; PS13 GRÖKORT; PS1733-2; PS1734-2; PS1735-1; PS2413-3; PS2415-4; PS2419-3; PS2419-4; PS2420-3; PS2422-2; PS2422-3; PS2423-3; PS2423-4; PS2424-1; PS2424-2; PS2425-3; PS2426-4; PS2427-3; PS2428-2; PS2429-4; PS2430-2; PS2432-3; PS2433-3; PS2434-3; PS2435-3; PS2437-3; PS2438-2; PS26/115; PS26/119; PS26/138; PS26/145; PS26/147; PS26/148; PS26/149; PS26/155; PS26/165; PS26/179; PS26/213; PS26/214; PS26/215; PS26/217; PS26/231; PS26/232; PS26/234; PS26/258; PS26/278; PS26 NEW; Quaternary Environment of the Eurasian North; QUEEN; Sampling by hand; SL

Type: Dataset

Format: application/zip, 33 datasets

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Sedimentology on two profiles from eastern Fram Strait (2015)

Müller, Claudia

PANGAEA

In: Supplement to: Müller, Claudia (1995): Spätquartäre Sedimentationsprozesse in der östlichen Framstrasse. Diploma Thesis, Alfred Wegener Institute for Polar and Marine Research, Bremerhaven & Fachbereich Geowissenschaften, Westfälische Wilhelms-Universität zu Münster, 84 pp, hdl:10013/epic.32119.d001

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Publication Date: 2024-07-01

Description: Detailed sedimentological and geochemical analyses were performed on sediments taken from two gravity cores (PS2118-2 and PS2121-4) and one surface sample (PS2121-2) from the eastern Fram Strait at 79°N to get informations about the paleoclimatic and paleoceanographic conditions through the last 35.000 years. The analyses comprise sand/silt/clay distribution, content of ice rafted debris, clay mineralogy, and measurements of carbonate, organic carbon, and nitrogen. The stratigraphy is based on oxygen isotope stages, 14C-dating, and correlation with other sediment cores from the eastern Fram Strait. The sediments from core PS2118-2 represent the time interval from middle isotope stage 3 to recent. The results can be summarized as follows: (1) During isotope stage 3 the Eastspitsbergen Current transports sediment-loaded icebergs in a seasonally open Fram Strait (SPIELHAGEN 1991). Because of a high content of smectite the source of these icebergs probably is Franz Josef Land. At the end of stage 3 HEBBELN (1991) supposes an influence of Atlantic water masses which might be connected with a maximum carbonate content. (2) At the beginning of isotope stage 2, a high content of ice-rafted debris as well as a high content of terrigenous organic carbon were recorded. This verifies the extension of the glaciers of Spitsbergen onto the continental shelf (HEBBELN 1991) and a maximum growth of the Barents Sea Icesheet (ELVERH01 et al., in press). During the last glacial maximum the high content of carbonate resulted from high aboundances of detrital fragments (limestone and dolomite) probably derived from Spitsbergen. The retreat of the glaciers at the end of stage 2 causes an increase in the content of ice rafted debris. At about 15.000 years B.P. a district melt-water signal appears and indicates the onset of deglaciation. This transition from the last glacial maximum to the recent interglacial (Termination I) is documented in decreasing values of d18O. (3) At least since the beginning of isotope stage 1 the inflow of warmer Atlantic water becomes important.

Keywords: ARK-VIII/2; AWI_Paleo; Giant box corer; GKG; Gravity corer (Kiel type); Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS19/079; PS19/082; PS19 EPOS II; PS2118-2; PS2121-2; PS2121-4; Quaternary Environment of the Eurasian North; QUEEN; SL; Svalbard

Type: Dataset

Format: application/zip, 6 datasets

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Diatom-bound N isotope records over the last two glacial cycles in sediment core PS75/072-4 (2015)

Studer, Anja S ; Sigman, Daniel M ; Martínez‐García, Alfredo ; [et al.]

PANGAEA

In: Supplement to: Studer, Anja S; Sigman, Daniel M; Martínez‐García, Alfredo; Benz, Verena; Winckler, Gisela; Kuhn, Gerhard; Esper, Oliver; Lamy, Frank; Jaccard, Samuel L; Wacker, Lukas; Oleynik, Sergey; Gersonde, Rainer; Haug, Gerald H (2015): Antarctic Zone nutrient conditions during the last two glacial cycles. Paleoceanography, 30(7), 845-862, https://doi.org/10.1002/2014PA002745

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Publication Date: 2024-07-01

Description: In a sediment core from the Pacific sector of the Antarctic Zone (AZ) of the Southern Ocean, we report diatom-bound N isotope (d15Ndb) records for total recoverable diatoms and two distinct diatom assemblages (pennate and centric rich). These data indicate tight coupling between the degree of nitrate consumption and Antarctic climate across the last two glacial cycles, with d15Ndb (and thus the degree of nitrate consumption) increasing at each major Antarctic cooling event. Coupled with evidence from opal- and barium-based proxies for reduced export production during ice ages, the d15Ndb increases point to ice age reductions in the supply of deep ocean-sourced nitrate to the AZ surface. The two diatom assemblages and species abundance data indicate that the d15Ndb changes are not the result of changing species composition. The pennate and centric assemblage d15Ndb records indicate similar changes but with a significant decline in their difference during peak ice ages. A tentative seasonality-based interpretation of the centric-to-pennate d15Ndb difference suggests that late summer surface waters became nitrate free during the peak glacials.

Keywords: ANT-XXVI/2; AWI_Paleo; Gravity corer (Kiel type); Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS75/072-4; PS75 BIPOMAC; SL; South Pacific Ocean

Type: Dataset

Format: application/zip, 5 datasets

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Dust flux records from the Subarctic North Pacific (2015)

Serno, Sascha ; Winckler, Gisela ; Anderson, Robert F ; [et al.]

PANGAEA

In: Supplement to: Serno, Sascha; Winckler, Gisela; Anderson, Robert F; Maier, Edith; Ren, Haojia Abby; Gersonde, Rainer; Haug, Gerald H (2015): Comparing dust flux records from the Subarctic North Pacific and Greenland: Implications for atmospheric transport to Greenland and for the application of dust as a chronostratigraphic tool. Paleoceanography, 30(6), 583-600, https://doi.org/10.1002/2014PA002748

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Publication Date: 2024-07-01

Description: We present a new record of eolian dust flux to the western Subarctic North Pacific (SNP) covering the past 27000 years based on a core from the Detroit Seamount. Comparing the SNP dust record to the NGRIP ice core record shows significant differences in the amplitude of dust changes to the two regions during the last deglaciation, while the timing of abrupt changes is synchronous. If dust deposition in the SNP faithfully records its mobilization in East Asian source regions, then the difference in the relative amplitude must reflect climate-related changes in atmospheric dust transport to Greenland. Based on the synchronicity in the timing of dust changes in the SNP and Greenland, we tie abrupt deglacial transitions in the 230Th-normalized 4He flux record to corresponding transitions in the well-dated NGRIP dust flux record to provide a new chronostratigraphic technique for marine sediments from the SNP. Results from this technique are complemented by radiocarbon dating, which allows us to independently constrain radiocarbon paleoreservoir ages. We find paleoreservoir ages of 745 ± 140 yr at 11653 yr BP, 680 ± 228 yr at 14630 yr BP and 790 ± 498 yr at 23290 yr BP. Our reconstructed paleoreservoir ages are consistent with modern surface water reservoir ages in the western SNP. Good temporal synchronicity between eolian dust records from the Subantarctic Atlantic and equatorial Pacific and the ice core record from Antarctica supports the reliability of the proposed dust tuning method to be used more widely in other global ocean regions.

Keywords: INOPEX; KAL; Kasten corer; North Pacific Ocean; SO202/1; SO202/1_07-6; Sonne

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Format: application/zip, 2 datasets

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Soil organic carbon storage and soil properties for 50 soil profiles in the Lena River Delta including land form description and map (2016)

Siewert, Matthias Benjamin ; Hugelius, Gustaf ; Heim, Birgit ; [et al.]

PANGAEA

In: Department of Physical Geography, University of Stockholm | Supplement to: Siewert, Matthias Benjamin; Hugelius, Gustaf; Heim, Birgit; Faucherre, Samuel (2016): Landscape controls and vertical variability of soil organic carbon storage in permafrost-affected soils of the Lena River Delta. CATENA, 147, 725-741, https://doi.org/10.1016/j.catena.2016.07.048

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Publication Date: 2024-07-01

Description: To project the future development of the soil organic carbon (SOC) storage in permafrost environments, the spatial and vertical distribution of key soil properties and their landscape controls needs to be understood. This article reports findings from the Arctic Lena River Delta where we sampled 50 soil pedons. These were classified according to the U.S.D.A. Soil Taxonomy and fall mostly into the Gelisol soil order used for permafrost-affected soils. Soil profiles have been sampled for the active layer (mean depth 58 ± 10 cm) and the upper permafrost to one meter depth. We analyze SOC stocks and key soil properties, i.e. C%, N%, C/N, bulk density, visible ice and water content. These are compared for different landscape groupings of pedons according to geomorphology, soil and land cover and for different vertical depth increments. High vertical resolution plots are used to understand soil development. These show that SOC storage can be highly variable with depth. We recommend the treatment of permafrost-affected soils according to subdivisions into: the surface organic layer, mineral subsoil in the active layer, organic enriched cryoturbated or buried horizons and the mineral subsoil in the permafrost. The major geomorphological units of a subregion of the Lena River Delta were mapped with a land form classification using a data-fusion approach of optical satellite imagery and digital elevation data to upscale SOC storage. Landscape mean SOC storage is estimated to 19.2 ± 2.0 kg C/m**2. Our results show that the geomorphological setting explains more soil variability than soil taxonomy classes or vegetation cover. The soils from the oldest, Pleistocene aged, unit of the delta store the highest amount of SOC per m2 followed by the Holocene river terrace. The Pleistocene terrace affected by thermal-degradation, the recent floodplain and bare alluvial sediments store considerably less SOC in descending order.

Keywords: Changing Permafrost in the Arctic and its Global Effects in the 21st Century; PAGE21

Type: Dataset

Format: application/zip, 2 datasets

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Compilation of scientific results of the EU project BENGAL (2016)

Pfannkuche, Olaf ; Rabouille, Christophe ; Bassinot, Franck C ; [et al.]

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Publication Date: 2024-07-01

Description: This data collection presents the compilation of scientific results of the EU project BENGAL.

Keywords: 12812-002; 12913-002; 12914-003; 12923-002; 12923-005; 12923-013; 12925-004; 12925-008; 12926-001; 12926-002; 12930-004; 12930-005; 12930-006; 12930-007; 12930-010; 12930-014; 12930-015; 12930-017; 12930-018; 12930-022; 12930-023; 12930-025; 12930-026; 12930-027; 12930-028; 12930-029; 12930-032; 12930-034; 12930-035; 12930-036; 12930-037; 12930-038; 12930-039; 12930-040; 12930-044; 12930-045; 12930-046; 12930-048; 12930-049; 12930-052; 12930-055; 12930-059; 12930-061; 12930-063; 12930-064; 12930-065; 12930-066; 12930-068; 12930-071; 12930-073; 12930-075; 12930-078; 12930-081; 12930-082; 12930-084; 12930-087; 12930-093; 12930-095; 13077-001; 13077-004; 13077-006; 13077-012; 13077-014; 13077-015; 13077-018; 13077-019; 13077-021; 13077-023; 13077-024; 13077-025; 13077-026; 13077-035; 13077-036; 13077-047; 13077-057; 13077-058; 13077-059; 13077-060; 13077-062; 13077-063; 13077-065; 13077-069; 13077-070; 13077-071; 13077-072; 13077-078; 13077-087; 13077-089; 13077-090; 13077-093; 13077-096; 13077-097; 13077-098; 13077-099; 13078-006; 13078-008; 13078-010; 13078-011; 13078-012; 13078-013; 13078-015; 13078-016; 13078-017; 13078-018; 13078-019; 13078-027; 13078-029; 13078-031; 13078-037; 13078-038; 13200-001; 13200-004; 13200-005; 13200-007; 13200-008; 13200-009; 13200-010; 13200-011; 13200-012; 13200-016; 13200-017; 13200-018; 13200-020; 13200-021; 13200-022; 13200-024; 13200-025; 13200-026; 13200-027; 13200-028; 13200-029; 13200-030; 13200-032; 13200-033; 13200-035; 13200-036; 13200-039; 13200-041; 13200-045; 13200-046; 13200-047; 13200-048; 13200-049; 13200-051; 13200-052; 13200-053; 13200-058; 13200-059; 13200-060; 13200-061; 13200-062; 13200-063; 13200-065; 13200-068; 13200-069; 13200-070; 13200-071; 13200-073; 13200-074; 13200-075; 13200-077; 13200-078; 13200-080; 13200-081; 13200-082; 13200-083; 13200-084; 13200-087; 13200-089; 13200-090; 13200-091; 13200-093; 13200-094; 13200-096; 13200-099; 13201-001; 13201-002; 13201-005; 13368-003; 13368-004; 13368-007; 13368-008; 13368-012; 13368-014; 13368-015; 13368-019; 13368-022; 13368-023; 13368-024; 13368-025; 13368-026; 13368-028; 13368-030; 13368-036; 13368-039; 13368-040; 13368-042; 13368-044; 13368-045; 13368-047; 13368-048; 13368-049; 13368-051; 13368-052; 13368-053; 13368-055; 13368-056; 13368-057; 13370-004; 13370-005; 13370-006; 13627-005; 13627-008; 13627-010; 13627-011; 13627-012; 13627-014; 13627-015; 13627-017; 13627-022; 13627-023; 13627-024; 269; 356; 362; 372; 373; 54301-002; 54301-003; 54301-005; 54301-008; 54301-009; 54301-010; 54301-012; 54301-014; 54301-016; 54301-019; 54301-021; 54301-023; 64PE123; ALBEX lander; Autonome colonisation module; Baited free-fall benthic amphipod trap; BC; Bengal; BENGAL; Benthic Biology and Geochemistry of a North-eastern Atlantic Abyssal Locality; BIO; Biology; BN; Bottom net; Bottom water sampler; Box corer; BWS; CH135; Challenger; Chalut à perche (6 m beam trawl); CMA; CP; CTD/Rosette; CTD-RO; Current meter, Aanderaa; D217; D222/1; D222/2; D226; D229; D231; D236; D237; DEMAR; DI236_08-1; DI236_11-1; DI236_16-1; DI236_18-1; DI236_21-1; DI236_23-1; DI236_25-1; DI236_28-1; DI236_29-1; DI236_31-1; DI236_34-1; DI236_42-1; DI236_45-1; DI236_49-1; Discovery (1962); D-MOC-01; D-MOC-02; D-MOC-03; D-MOC-04; D-MOC-07; Dy222_FFR-05; FFR; FFR-01; FFR-02; FFR-04; Free vehicle respirometer; FT-04; FTS; GBGL; GBGL-01; GBGL-02; Göteborg lander; IMBC; IMBC lander; KASTEN; Kasten corer (1 m**2); M36/4; M36/4_MC1; M36/4_MC4; M36/4_MC5; M36/5; M36/5_MC26; M36/5_MC27; M36/5_MC28; M36/6; M36/6_368FFR; M36/6_371BWS; M36/6_372MUC; M36/6_373MUC; M36/6_375MSN; M36/6_380MSN; M36/6_381BWS; M36/6_BWS-19; M36/6_BWS-20; M36/6_MC33; M36/6_MC38; M36/6_MC41; M42/2; M42/2_363-1; M42/2_365; M42/2_366; M42/2_367; M42/2_368-2; M42/2_368-3; M42/2_370; M42/2_373; M42/2_374-2; M42/2_374-3; M42/2_377-1; M42/2_377-5; M42/2_377-6; M42/2_380-2; M42/2_380-3; M42/2_380-4; M42/2_381; M42/2_384-1; M42/2_385; M42/2_386; M42/2_388-1; M42/2_388-2; M42/2_391-2; M42/2_397-1; M42/2_397-3; M42/2_417; M42/2_418; M42/2_419; M42/2_420; M42/2_421-2; M42/2_421-3; M42/2_421-5; M42/2_422; M42/2_424-1; M42/2_424-2; M42/2_424-4; M42/2_425; M42/2_426-2; M42/2_429-1; M42/2_429-2; M42/2_430; M42/2_432-1; M42/2_433; M42/2_434-1; M42/2_434-2; M42/2_436; M42/2_438; M42/2_BWS-01; M42/2_BWS-02; M42/2_BWS-04; M42/2_BWS-05; M42/2_BWS-09; M42/2_BWS-10; M42/2_BWS-12; M42/2_CTD-03; M42/2_CTD-05; M42/2_CTD-06; M42/2_CTD-07; M42/2_CTD-08; M42/2_CTD-09; M42/2_CTD-13; M42/2_CTD-22; M42/2_CTD-24; M42/2_CTD-25; M42/2_CTD-28; M42/2_CTD-29; M42/2_CTD-31; M42/2_MC-04; M42/2_MC-09; M42/2_MC1; M42/2_MC2; M42/2_MC27; M42/2_MC28; M42/2_MC29; M42/2_MC-30; M42/2_MC31; M42/2_MC-32; M42/2_MC34; M42/2_MC-34; M42/2_MC4; M42/2_MC5; M42/2_MC6; M42/2_MC7; M42/2_MC8; MACOL; MCB57; MCB57-74; MCB92; MCS; MEGAC; MegaCorer; Meteor (1986); MOC; MOC1; MOCNESS opening/closing plankton net; MOCNESS opening/closing plankton net 1 sqm; MSN; MUC; MULT; MultiCorer; MultiCorer, small; MultiCorer Barnett pattern (12-57); MultiCorer Barnett pattern (4-57.8-74); MultiCorer Barnett pattern (8-92); Multiple investigations; Multiple opening/closing net; NIOZL; OTSB14; PAP; PAP-XIX; PAP-XV; PAP-XVIII; PAP-XX; PAP-XXIIIa; Pelagia; Photo sledge; PLG123; PLG123/12-1; PLG123/13-2; PLG123/13-3; PLG123/13-5; PLG123/13-6; PLG123/13-7; PLG123/14-1; Porcupine Abyssal Plain; RESP; Respirometer; RK127; RK128; RK130; SAPS; Sediment profile imagery; Semi-balloon trawl; SEP; South Atlantic Ocean; Spade box corer; Stand-alone pumps; Trap, sediment; TRAPS; VEGBOXC; Vertical amphipod trap; VET

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High-resolution sea surface temperature and surface seawater oxygen isotope composition reconstructions for sediment core GIK18515-3 (2016)

Schröder, Jan F ; Holbourn, Ann E ; Kuhnt, Wolfgang ; [et al.]

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In: Supplement to: Schröder, Jan F; Holbourn, Ann E; Kuhnt, Wolfgang; Küssner, Kevin (2016): Variations in sea surface hydrology in the southern Makassar Strait over the past 26 kyr. Quaternary Science Reviews, 154, 143-156, https://doi.org/10.1016/j.quascirev.2016.10.018

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Publication Date: 2024-07-01

Description: We present centennial-scale records of sea surface temperature and oxygen isotopes in a sediment core from Mandar Bay, offshore Sulawesi in the southern Makassar Strait, which provide new insights into the variability of Indonesian climate over the past 26 kyr. The age model for the core is constrained by 17 AMS radiocarbon ages, with a surface ocean reservoir age correction based on paired wood and foraminiferal samples. Small Holocene reservoir ages of 105 ± 180 years point to intense surface ocean-atmosphere interchange linked to increased monsoonal precipitation, whereas Last Glacial Maximum and deglacial reservoir ages are significantly higher. Mg/Ca derived sea surface temperature reconstructions based on Globigerinoides ruber (s. s., white) exhibit an extended plateau during the Antarctic Cold Reversal, suggesting an atmospheric connection to high-latitude Southern Hemisphere climate and a seasonal bias on G. ruber. This is in agreement with southern hemisphere sites along the track of the Indonesian Throughflow and in contrast to Northern Hemisphere records from the South China Sea, Sulu Sea and Western Pacific (off Mindanao), which exhibit warming during the Bølling-Allerød. Ice-volume corrected d18O seawater (d18Osw) increased during Heinrich Stadial 1 and the Younger Dryas, whereas the Bølling-Allerød is characterized by low d18Osw. We attribute d18Osw variability in the southern Makassar Strait during the Last Glacial Maximum and glacial termination to changes in provenance and seasonality of precipitation rather than to variability in the amount of local precipitation and runoff.

Keywords: GIK/IfG; GIK18515-3; Institute for Geosciences, Christian Albrechts University, Kiel; KL; MAJA; Makasar Strait; Piston corer (BGR type); SO217; SO217_2-3; Sonne

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