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Zhao, Xueqin; Dupont, Lydie M; Schefuß, Enno; Granger, Robyn; Wefer, Gerold (2018): Organic-walled dinoflagellate cyst data of sediment core GeoB8323-2. PANGAEA, https://doi.org/10.1594/PANGAEA.886221, Supplement to: Zhao, X et al. (2019): Late-Holocene oceanic variability in the southern Benguela region driven by interplay of upwelling, fluvial discharge, and Agulhas leakage. The Holocene, 29(2), 219-230, https://doi.org/10.1177/0959683618810396

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Abstract:
The southern Benguela upwelling system near the St Helena Bay has been proposed to be affected by various factors, while few investigations about the late-Holocene oceanic conditions has been carried out in this area. To determine the oceanic variability and its forcing mechanisms in the southern Benguela region during the late-Holocene, we examined organic-walled dinoflagellate cyst (dinocyst) records from two marine sediment cores located in the southernmost and central Benguela upwelling system. We compare our results with other proxies including alkenone-derived SSTs, grain size, and coccolithophore assemblages from the same samples. The results indicate a distinctive behavior between the southernmost Benguela system and the central Benguela area. We infer that the oceanic conditions in these two regions are primarily governed by an interplay of wind-induced upwelling, fluvial discharge, and advection of cold sub-Antarctic waters, which is consistent with the current understanding of the paleoclimate conditions in this area. However, the findings also suggest that the southernmost Benguela system also receives additional effects of warm and saline waters via the Agulhas leakage, which has a clear influence on the oceanic conditions in this area.
Coverage:
Latitude: -32.031500 * Longitude: 18.221500
Date/Time Start: 2003-01-29T16:40:00 * Date/Time End: 2003-01-29T16:40:00
Minimum DEPTH, sediment/rock: 0.015 m * Maximum DEPTH, sediment/rock: 2.245 m
Event(s):
GeoB8323-2 * Latitude: -32.031500 * Longitude: 18.221500 * Date/Time: 2003-01-29T16:40:00 * Elevation: -91.0 m * Recovery: 2.85 m * Campaign: M57/1 * Basis: Meteor (1986) * Method/Device: Gravity corer (Kiel type) (SL) * Comment: See core description
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, sediment/rockDepthmZhao, XueqinGeocode
2Depth, top/minDepth topmZhao, Xueqin
3Depth, bottom/maxDepth botmZhao, Xueqin
4AGEAgeka BPZhao, XueqinGeocode
5AgeAgea ADZhao, Xueqin
6Brigantedinium spp.Brigantedinium spp.#Zhao, Xueqin
7Dubridinium spp.Dubridinium spp.#Zhao, Xueqin
8Echinidinium spp.Echinidinium spp.#Zhao, Xueqin
9Echinidinium aculeatumE. aculeatum#Zhao, Xueqin
10Echinidinium delicatumE. delicatum#Zhao, Xueqin
11Echinidinium transparantumE. transparantum#Zhao, Xueqin
12Echinidinium granulatumE. granulatum#Zhao, Xueqin
13Echinidinium zonneveldiaeE. zonneveldiae#Zhao, Xueqin
14Lejeunecysta spp.Lejeunecysta spp.#Zhao, Xueqin
15Lejeunecysta olivaL. oliva#Zhao, Xueqin
16Lejeunecysta sabrinaL. sabrina#Zhao, Xueqin
17Lejeunecysta paratenellaL. paratenella#Zhao, Xueqin
18Polykrikos kofoidiiP. kofoidii#Zhao, Xueqin
19Polykrikos schwartziiP. schwartzii#Zhao, Xueqin
20Protoperidinium americanumP. americanum#Zhao, Xueqin
21Quinquecuspis concretaQ. concreta#Zhao, Xueqin
22Selenopemphix nephroidesS. nephroides#Zhao, Xueqin
23Selenopemphix quantaS. quanta#Zhao, Xueqin
24Stelladinium robustumS. robustum#Zhao, Xueqin
25Trinovantedinium applanatumT. applanatum#Zhao, Xueqin
26Votadinium spinosumV. spinosum#Zhao, Xueqin
27Votadinium calvumV. calvum#Zhao, Xueqin
28Xandarodinium xanthumX. xanthum#Zhao, Xueqin
29Protoperidinium monospinumP. monospinum#Zhao, Xueqin
30Impagidinium spp.Impagidinium spp.#Zhao, Xueqin
31Impagidinium variaseptumI. variaseptum#Zhao, Xueqin
32Lingulodinium machaerophorumL. machaerophorum#Zhao, Xueqin
33Operculodinium centrocarpumO. centrocarpum#Zhao, Xueqin
34Operculodinium israelianumO. israelianum#Zhao, Xueqin
35Polysphaeridium zoharyiP. zoharyi#Zhao, Xueqin
36Spiniferites membranaceusS. membranaceus#Zhao, Xueqin
37Spiniferites mirabilisS. mirabilis#Zhao, Xueqin
38Spiniferites hyperacanthusS. hyperacanthus#Zhao, Xueqin
39Spiniferites ramosusS. ramosus#Zhao, Xueqin
40Spiniferites spp.Spiniferites spp.#Zhao, Xueqin
41Dinoflagellate indeterminataDinofl indet#Zhao, Xueqin
42Dinoflagellate cystDinofl cyst#Zhao, Xueqin
43LycopodiumLyc#Zhao, Xueqin
44VolumeVolmlZhao, Xueqin
45Lycopodium (added)Lyc(ad)#Zhao, Xueqin
Size:
1505 data points

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