Search Results - "Wilfried Jokat"

The initial Gondwana break-up: A synthesis based on new potential field data of the Africa-Antarctica Corridor by Mueller, Christian Olaf, Jokat, Wilfried

“…The initial opening of the Africa-Antarctica Corridor, in the heart of Gondwana, is still enigmatic due to missing information on the origin of major crustal…”
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Tectonic reconstructions for paleobathymetry in Drake Passage by Eagles, Graeme, Jokat, Wilfried

“…A minimum-complexity tectonic reconstruction, based on published and new basin opening models, depicts how the Scotia Sea grew by Cenozoic plate divergence,…”
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Deep glacial troughs and stabilizing ridges unveiled beneath the margins of the Antarctic ice sheet by Morlighem, Mathieu, Rignot, Eric, Binder, Tobias, Blankenship, Donald, Drews, Reinhard, Eagles, Graeme, Eisen, Olaf, Ferraccioli, Fausto, Forsberg, René, Fretwell, Peter, Goel, Vikram, Greenbaum, Jamin S., Gudmundsson, Hilmar, Guo, Jingxue, Helm, Veit, Hofstede, Coen, Howat, Ian, Humbert, Angelika, Jokat, Wilfried, Karlsson, Nanna B., Lee, Won Sang, Matsuoka, Kenichi, Millan, Romain, Mouginot, Jeremie, Paden, John, Pattyn, Frank, Roberts, Jason, Rosier, Sebastian, Ruppel, Antonia, Seroussi, Helene, Smith, Emma C., Steinhage, Daniel, Sun, Bo, Broeke, Michiel R. van den, Ommen, Tas D. van, Wessem, Melchior van, Young, Duncan A.

“…The Antarctic ice sheet has been losing mass over past decades through the accelerated flow of its glaciers, conditioned by ocean temperature and bed…”
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The Jurassic history of the Africa–Antarctica corridor — new constraints from magnetic data on the conjugate continental margins by Leinweber, Volker Thor, Jokat, Wilfried

“…Finding the best fit for East- and West-Gondwana requires a detailed knowledge of the initial Jurassic movements between Africa and Antarctica. This study…”
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The early drift of the Indian plate by Jokat, Wilfried, Altenbernd, Tabea, Eagles, Graeme, Geissler, Wolfram H.

“…Plate kinematic models propose that India and Sri Lanka (INDSRI) separated from Antarctica by extremely slow seafloor spreading that started in early…”
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Threshold in North Atlantic-Arctic Ocean circulation controlled by the subsidence of the Greenland-Scotland Ridge by Stärz, Michael, Jokat, Wilfried, Knorr, Gregor, Lohmann, Gerrit

“…High latitude ocean gateway changes are thought to play a key role in Cenozoic climate evolution. However, the underlying ocean dynamics are poorly understood…”
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Hotspot volcanism in the southern South Atlantic: Geophysical constraints on the evolution of the southern Walvis Ridge and the Discovery Seamounts by Jokat, Wilfried, Reents, Stefanie

“…The southern Atlantic hosts a variety of magmatic structures, namely the Walvis Ridge, the Discovery Seamounts and the Shona Ridge, which are believed to be…”
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Crustal variability along the rifted/sheared East African margin: a review by Vormann, Maren, Jokat, Wilfried

“…The East African margin between the Somali Basin in the north and the Natal Basin in the south formed as a result of the Jurassic/Cretaceous dispersal of…”
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The Mesozoic breakup of the Weddell Sea by König, Matthias, Jokat, Wilfried

“…A new set of rotations is presented that describes a refined model for the early opening of the Weddell Sea between South America and Antarctica and the…”
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Deposition History and Paleo‐Current Activity on the Southeastern Lomonosov Ridge and its Eurasian Flank Based on Seismic Data by Estella Weigelt, Wilfried Jokat, Hannes Eisermann

“…Abstract A regional seismic survey on the southeastern Lomonosov Ridge (LR) and adjacent basins provides constraints on the coupled evolution of ocean…”
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Evidence for ice-free summers in the late Miocene central Arctic Ocean by Stein, Ruediger, Fahl, Kirsten, Schreck, Michael, Knorr, Gregor, Niessen, Frank, Forwick, Matthias, Gebhardt, Catalina, Jensen, Laura, Kaminski, Michael, Kopf, Achim, Matthiessen, Jens, Jokat, Wilfried, Lohmann, Gerrit

“…Although the permanently to seasonally ice-covered Arctic Ocean is a unique and sensitive component in the Earth’s climate system, the knowledge of its…”
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New aeromagnetic view of the geological fabric of southern Dronning Maud Land and Coats Land, East Antarctica by Mieth, Matthias, Jokat, Wilfried

“…The ice shield of Antarctica, which measures several kilometers in thickness, presents a challenge when attempting to unravel the subglacial geology. Here, we…”
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Hunting for the Tristan mantle plume – An upper mantle tomography around the volcanic island of Tristan da Cunha by Schlömer, Antje, Geissler, Wolfram H., Jokat, Wilfried, Jegen, Marion

“…The active volcanic island Tristan da Cunha, located at the southwestern and youngest end of the Walvis Ridge – Tristan/Gough hotspot track, is believed to be…”
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Thermochemical anomalies in the upper mantle control Gakkel Ridge accretion by O’Connor, John M., Jokat, Wilfried, Michael, Peter J., Schmidt-Aursch, Mechita C., Miggins, Daniel P., Koppers, Anthony A. P.

“…Despite progress in understanding seafloor accretion at ultraslow spreading ridges, the ultimate driving force is still unknown. Here we use 40 Ar/ 39 Ar…”
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New geophysical data from a key region in East Antarctica: Estimates for the spatial extent of the Tonian Oceanic Arc Super Terrane (TOAST) by Ruppel, Antonia, Jacobs, Joachim, Eagles, Graeme, Läufer, Andreas, Jokat, Wilfried

“…Within Antarctica, eastern Dronning Maud Land (DML) represents a key region for improving our understanding of crustal fragments that were involved in the…”
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Seafloor evidence for pre-shield volcanism above the Tristan da Cunha mantle plume by Geissler, Wolfram H., Wintersteller, Paul, Maia, Marcia, Strack, Tonke, Kammann, Janina, Eagles, Graeme, Jegen, Marion, Schloemer, Antje, Jokat, Wilfried

“…Tristan da Cunha is assumed to be the youngest subaerial expression of the Walvis Ridge hot spot. Based on new hydroacoustic data, we propose that the most…”
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Age distribution of Ocean Drill sites across the Central Walvis Ridge indicates plate boundary control of plume volcanism in the South Atlantic by O'Connor, John M., Jokat, Wilfried

“…The Tristan–Gough hotspot trail on the African plate consists of the Walvis Ridge and a younger province of seamounts and islands. In order to determine the…”
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Thickness of the oceanic crust, the lithosphere, and the mantle transition zone in the vicinity of the Tristan da Cunha hot spot estimated from ocean-bottom and ocean-island seismometer receiver functions by Geissler, Wolfram H., Jokat, Wilfried, Jegen, Marion, Baba, Kiyoshi

“…The most prominent hotspot in the South Atlantic is Tristan da Cunha, which is widely considered to be underlain by a mantle plume. But the existence, location…”
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Superplume mantle tracked isotopically the length of Africa from the Indian Ocean to the Red Sea by O’Connor, John M., Jokat, Wilfried, Regelous, Marcel, Kuiper, Klaudia F., Miggins, Daniel P., Koppers, Anthony A. P.

“…Seismological findings show a complex scenario of plume upwellings from a deep thermo-chemical anomaly (superplume) beneath the East African Rift System…”
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Repeated Pleistocene glaciation of the East Siberian continental margin by Niessen, Frank, Hong, Jong Kuk, Hegewald, Anne, Matthiessen, Jens, Stein, Rüdiger, Kim, Hyoungjun, Kim, Sookwan, Jensen, Laura, Jokat, Wilfried, Nam, Seung-Il, Kang, Sung-Ho

“…During glacial periods, ice sheets covered continental margins through much of Arctic North America, Greenland and western Eurasia. Marine structures suggest…”
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