scholarly journals A High‐Resolution Paleosecular Variation Record for Marine Isotope Stage 6 From Southeastern Black Sea Sediments

2021 ◽  
Vol 126 (3) ◽  
Author(s):  
Norbert R. Nowaczyk ◽  
Jiabo Liu ◽  
Birgit Plessen ◽  
Antje Wegwerth ◽  
Helge W. Arz
Keyword(s):  
High Resolution ◽  
Black Sea ◽  
Marine Isotope Stage ◽  
Paleosecular Variation

Mesoscale eddies in the Black Sea: Characteristics and kinematic properties in a high-resolution ocean model

2021 ◽  
pp. 103613
Author(s):  
Ehsan Sadighrad ◽  
Bettina A. Fach ◽  
Sinan S. Arkin ◽  
Baris Salihoğlu ◽  
Sinan Hüsrevoğlu
Keyword(s):  
High Resolution ◽  
Black Sea ◽  
Mesoscale Eddies ◽  
Ocean Model ◽  
The Black Sea ◽  
Kinematic Properties

scholarly journals Abrupt climate changes during Termination III in Southern Europe

2017 ◽  
Vol 114 (38) ◽  
pp. 10047-10052 ◽  
Author(s):  
Carlos Pérez-Mejías ◽  
Ana Moreno ◽  
Carlos Sancho ◽  
Miguel Bartolomé ◽  
Heather Stoll ◽  
...  
Keyword(s):  
High Resolution ◽  
Water Availability ◽  
Climate Changes ◽  
Late Quaternary ◽  
Marine Isotope Stage ◽  
Southern Europe ◽  
Vegetation Productivity ◽  
Common Features ◽  
Sequence Of Events ◽  
Millennial Scale

The Late Quaternary glacial–interglacial transitions represent the highest amplitude climate changes over the last million years. Unraveling the sequence of events and feedbacks at Termination III (T-III), including potential abrupt climate reversals similar to those of the last Termination, has been particularly challenging due to the scarcity of well-dated records worldwide. Here, we present speleothem data from southern Europe covering the interval from 262.7 to 217.9 kyBP, including the transition from marine isotope stage (MIS) 8 to MIS 7e. High-resolution δ13C, δ18O, and Mg/Ca profiles reveal major millennial-scale changes in aridity manifested in changing water availability and vegetation productivity. uranium–thorium dates provide a solid chronology for two millennial-scale events (S8.1 and S8.2) which, compared with the last two terminations, has some common features with Heinrich 1 and Heinrich 2 in Termination I (T-I).

Impact of high-resolution FWI in the Western Black Sea: Revealing overburden and reservoir complexity

2017 ◽  
Vol 36 (1) ◽  
pp. 60-66 ◽  
Author(s):  
Partha Routh ◽  
Ramesh Neelamani ◽  
Rongrong Lu ◽  
Spyros Lazaratos ◽  
Hendrik Braaksma ◽  
...  
Keyword(s):  
High Resolution ◽  
Black Sea

Evaluation of the new high resolution unstructured grid Marmara Sea model

2021 ◽  
Author(s):  
Mehmet Ilicak ◽  
Ivan Federico ◽  
Ivano Barletta ◽  
Nadia Pinardi ◽  
Stefania Angela Ciliberti ◽  
...  
Keyword(s):  
High Resolution ◽  
Boundary Conditions ◽  
Black Sea ◽  
Mixed Layer ◽  
Unstructured Grid ◽  
The Black Sea ◽  
Marmara Sea ◽  
Lateral Boundary ◽  
Lateral Boundary Conditions ◽  
Forecasting System

<p>Marmara Sea including Bosphorus and Dardanelles Straits (i.e. Turkish Strait Systems, TSS) is the connection between the Black Sea and the Mediterranean. The exchange flow that occurs in the Straits is crucial to set the deep water properties in the Black Sea and the surface water conditions in the Northern Aegean Sea. We have developed a new high-resolution unstructured grid model (U-TSS) for the Marmara Sea including the Bosporus and Dardanelles Straits using the System of HydrodYnamic Finite Element Modules (SHYFEM). Using an unstructured grid in the horizontal better resolves geometry of the Turkish Straits. The new model has a resolution between 500 meter in the deep to 50 meter in the shallow areas, and 93 geopotential coordinate levels in the vertical. We conducted a 4 year hindcast simulation between 2016 and 2019 using lateral boundary conditions from CMEMS (https://marine.copernicus.eu/) analysis, in particular Black Sea Forecasting System (BS-FS) for the northern boundary and Mediterranean Sea Forecasting System (MS-FS) for the southern boundary. Atmospheric boundary conditions fare from the ECMWF dataset.</p><p>Mean averaged surface circulation shows that there is a cyclonic gyre in the middle of the basin due to Bosphorus jet flowing to the south and turning to west after reaching the southern Marmara coast. The U-TSS model has been validated against the seasonal in situ observations obtained from four different cruises between 2017 and 2018. The maximum bias occurs at around halocline depth between 20 to 30 meters.  We also found that root mean square error field is higher in the mixed layer interface. We conclude that capturing shallow mixed layer depth is very in the Marmara Sea due to the interplay of air-sea fluxes and mixing parametrizations uncertainties. Maximum salinity bias and rms in the new U-TSS model are around 3 psu which is a significant improvement with respect to previous studies. This new model will be used as an operational forecasting system and will provide lateral boundary conditions for the BS-FS and MS-FS models in the future.</p>

scholarly journals A new perspective of the Alboran Upwelling System reconstruction during the Marine Isotope Stage 11: A high-resolution coccolithophore record

2020 ◽  
Vol 245 ◽  
pp. 106520
Author(s):  
Alba González-Lanchas ◽  
José-Abel Flores ◽  
Francisco J. Sierro ◽  
María Ángeles Bárcena ◽  
Andrés S. Rigual-Hernández ◽  
...  
Keyword(s):  
High Resolution ◽  
Marine Isotope Stage ◽  
Upwelling System ◽  
System Reconstruction ◽  
New Perspective
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