scholarly journals Impact of a wind climate change on the surge in the southern North Sea

1997 ◽  
Vol 8 ◽  
pp. 45-59 ◽  
Author(s):  
W Bijl
Keyword(s):  
Climate Change ◽  
North Sea ◽  
Southern North Sea ◽  
Wind Climate

scholarly journals Large-scale winds in the southern North Sea region: the wind part of the KNMI’14 climate change scenarios

2015 ◽  
Vol 10 (3) ◽  
pp. 035004 ◽  
Author(s):  
Andreas Sterl ◽  
Alexander M R Bakker ◽  
Henk W van den Brink ◽  
Rein Haarsma ◽  
Andrew Stepek ◽  
...  
Keyword(s):  
Climate Change ◽  
North Sea ◽  
Large Scale ◽  
Climate Change Scenarios ◽  
Southern North Sea

Late Pleistocene evolution of the Rhine-Meuse system in the southern North Sea basin: imprints of climate change, sea-level oscillation and glacio-isostacy

2007 ◽  
Vol 26 (25-28) ◽  
pp. 3216-3248 ◽  
Author(s):  
F.S. Busschers ◽  
C. Kasse ◽  
R.T. van Balen ◽  
J. Vandenberghe ◽  
K.M. Cohen ◽  
...  
Keyword(s):  
Climate Change ◽  
Sea Level ◽  
Late Pleistocene ◽  
North Sea ◽  
Southern North Sea ◽  
Level Oscillation

scholarly journals Comparing demersal fish assemblages between periods of contrasting climate and fishing pressure

2011 ◽  
Vol 68 (6) ◽  
pp. 1189-1198 ◽  
Author(s):  
Remment ter Hofstede ◽  
Adriaan D. Rijnsdorp
Keyword(s):  
Climate Change ◽  
North Sea ◽  
Fish Community ◽  
Fish Assemblages ◽  
Demersal Fish ◽  
Warm Period ◽  
Cold Period ◽  
Past Century ◽  
Fishing Pressure ◽  
Southern North Sea

Abstract ter Hofstede, R., and Rijnsdorp, A. D. 2011. Comparing demersal fish assemblages between periods of contrasting climate and fishing pressure. – ICES Journal of Marine Science, 68: 1189–1198. Fish communities are dynamic and their structure is known to change over time. Traditionally, these changes were considered to be fisheries-induced, but recent analyses also suggest that global warming could affect the distribution, abundance, and assemblage composition of marine fish. However, disentangling the effects of fisheries and those resulting from climate change is difficult, because both potential drivers act simultaneously. In our study, we distinguished between the effects of fisheries and climate change on the fish assemblage of the southern North Sea by comparing survey catch data for that region during four unique periods throughout the past century, characterized by (i) low fishing pressure during a cold period (1902–1908), (ii) low fishing pressure during a warm period (1950–1956), (iii) high fishing pressure during a cold period (1978–1984), and (iv) high fishing pressure during a warm period (2002–2008). Our analysis indicates that the demersal fish community in the southern North Sea has changed in response to changes in both climate and fishing pressure. Our results suggest both a relatively higher richness of Lusitanian (warm-favouring) species compared with boreal (cool-favouring) species, and a lower mean body size of the fish community during times of warming, independent of fishing pressure.

Detrital zircon geochronology and heavy mineral analysis as complementary provenance tools in the presence of extensive weathering, reworking and recycling: the Neogene of the southern North Sea Basin

2021 ◽  
pp. 1-13
Author(s):  
Jasper Verhaegen ◽  
Hilmar von Eynatten ◽  
István Dunkl ◽  
Gert Jan Weltje
Keyword(s):  
North Sea ◽  
Chemical Weathering ◽  
Heavy Mineral ◽  
Mineral Analysis ◽  
Provenance Analysis ◽  
Detrital Zircon Geochronology ◽  
Southern North Sea ◽  
Variable Heavy ◽  
Mineral Data ◽  
Heavy Mineral Analysis

Abstract Heavy mineral analysis is a long-standing and valuable tool for sedimentary provenance analysis. Many studies have indicated that heavy mineral data can also be significantly affected by hydraulic sorting, weathering and reworking or recycling, leading to incomplete or erroneous provenance interpretations if they are used in isolation. By combining zircon U–Pb geochronology with heavy mineral data for the southern North Sea Basin, this study shows that the classic model of sediment mixing between a northern and a southern source throughout the Neogene is more complex. In contrast to the strongly variable heavy mineral composition, the zircon U–Pb age spectra are mostly constant for the studied samples. This provides a strong indication that most zircons had an initial similar northern source, yet the sediment has undergone intense chemical weathering on top of the Brabant Massif and Ardennes in the south. This weathered sediment was later recycled into the southern North Sea Basin through local rivers and the Meuse, leading to a weathered southern heavy mineral signature and a fresh northern heavy mineral signature, yet exhibiting a constant zircon U–Pb age signature. Thus, this study highlights the necessity of combining multiple provenance proxies to correctly account for weathering, reworking and recycling.

scholarly journals Macrofauna as a major driver of bentho‐pelagic exchange in the southern North Sea

2021 ◽  
Author(s):  
Andreas Neumann ◽  
Justus E. E. Beusekom ◽  
Annika Eisele ◽  
Kay‐Christian Emeis ◽  
Jana Friedrich ◽  
...  
Keyword(s):  
North Sea ◽  
Southern North Sea

Radiogenic and stable isotope evidence for age and origin of authigenic illites in the Rotliegend, southern North Sea

Clay Minerals ◽  
1994 ◽  
Vol 29 (4) ◽  
pp. 555-565 ◽  
Author(s):  
K. Ziegler ◽  
B. W. Sellwood ◽  
A. E. Fallick
Keyword(s):  
North Sea ◽  
Structural Evolution ◽  
Lower Permian ◽  
Gas Reservoirs ◽  
Gaseous Hydrocarbon ◽  
Oxygen Isotope Exchange ◽  
Basin Inversion ◽  
Southern North Sea ◽  
Evaporative Concentration ◽  
Isotopic Analyses

AbstractAeolian sandstones of the Lower Permian Leman Formation (Rotliegend Group) provide the best gas reservoir in the southern North Sea, but permeability is greatly reduced by the presence of authigenic fibrous illites. New radiogenic (K/Ar) and stable (oxygen and hydrogen) isotope data are presented for fibrous illite cements (<0.1 µm), so that the absolute timing and controlling diagenetic factors for their formation can be more fully evaluated. Thus, the expected quality of gas reservoirs in the southern North Sea might be better predicted. Samples have been analysed from five wells in areas with contrasting structural evolution: the Sole Pit Basin, and the Indefatigable Shelf. The K/Ar ages of between 160 and 190 Ma have been obtained from the Indefatigable Shelf illites, and between 120 and 160 Ma for those from the Sole Pit Basin, reflecting different times of basin inversion. These K/Ar ages are interpreted by reference to burial/thermal models for each well. The temperature of illite precipitation falls between 88 and 140°C. Calculated pore-fluid compositions derived from oxygen and hydrogen isotopic analyses give values of ∼ + 1 to +9‰ (SMOW) δ18O and +1 to −50‰ (SMOW) δD. The illite δD values have probably been affected by isotopic exchange and fractionation with the surrounding gaseous hydrocarbon. The δ18O values reflect the degree to which evaporative concentration had affected Zechstein marine waters which subsequently invaded the Leman Sandstone. Comparisons between δ18O and δD values in clays and in formation water for the Leman Field suggest that oxygen isotope exchange might have taken place, and that the initial K+ and radiogenic 40Ar contents within illites may have been modified.

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