Decoding short-term climatic variations from cave sediments over the Mid-Holocene: Implications for human occupation in the Katarraktes Cave System, Northern Greece

2021 ◽  
Author(s):  
Christos Pennos ◽  
Sofia Pechlivanidou ◽  
Elina Aidona ◽  
Anna Bourliva ◽  
Stein-Erik Lauritzen ◽  
...  
Keyword(s):  
Human Occupation ◽  
Short Term ◽  
Northern Greece ◽  
Climatic Variations ◽  
Cave System ◽  
Cave Sediments

scholarly journals Delimiting morphological and volumetric elements of cave surveys as analogues for paleokarst reservoir modelling – A case study from the Maaras cave system, northern Greece

2021 ◽  
Vol 129 ◽  
pp. 105091
Author(s):  
Bjarte Lønøy ◽  
Christos Pennos ◽  
Jan Tveranger ◽  
Ilias Fikos ◽  
George Vargemezis ◽  
...  
Keyword(s):  
Northern Greece ◽  
Reservoir Modelling ◽  
Cave System

Continental Oxygen Isotopic Record of the Last 170,000 Years in Jerusalem

1999 ◽  
Vol 51 (3) ◽  
pp. 317-327 ◽  
Author(s):  
Amos Frumkin ◽  
Derek C. Ford ◽  
Henry P. Schwarcz
Keyword(s):  
Mediterranean Sea ◽  
Glacial Cycle ◽  
Short Term ◽  
Last Glacial ◽  
Climatic Variations ◽  
Probable Source ◽  
Oxygen Isotopic ◽  
The Mediterranean ◽  
The Last Glacial

AbstractA long radiometrically dated oxygen isotopic record of continental climatic variations since the penultimate glaciation was obtained from a stalagmite deposited in a sealed cave in Jerusalem. This record shows that speleothems have the potential of assigning dates to long- and short-term climatic events, with possible refining of Milankovitch tuning of ice and marine records which themselves are not datable. Short-term (∼1000-yr) events are very significant in the region, reaching ∼50% of glacial/interglacial fluctuations. The Mediterranean Sea was the most probable source of local precipitation throughout the last glacial cycle.

A short-term cooling event, 4.205 million years ago, in the Ptolemais Basin, northern Greece

2001 ◽  
Vol 173 (1-2) ◽  
pp. 61-73 ◽  
Author(s):  
M.L Kloosterboer-van Hoeve ◽  
J Steenbrink ◽  
H Brinkhuis
Keyword(s):  
Short Term ◽  
Northern Greece

African and Atlantic short-term climatic variations described from Meteosat water vapor channel

1995 ◽  
Vol 13 (7) ◽  
pp. 768-781 ◽  
Author(s):  
L. Picon ◽  
S. Fongang ◽  
G. Seze ◽  
M. Desbois
Keyword(s):  
Water Vapor ◽  
Intertropical Convergence Zone ◽  
Interannual Variations ◽  
Short Term ◽  
Climatic Variations ◽  
Brightness Temperatures ◽  
The North ◽  
Water Vapor Feedback ◽  
Cloud Tops ◽  
Seasonal And Interannual Variations

Abstract. Pluriannual series of Meteosat-2 water vapor (WV) images are used to build average maps of decadal and monthly brightness temperatures in the 6.3 µm channel. This processing is applied to all the 3-hourly scenes, clear or cloudy, for July 1983 to July 1987. The ISCCP cloudiness analyses confirm that the warmest spots in the monthly WV images correspond to scenes either clear or covered with low clouds, whereas the coldest areas correspond to scenes where cloud tops above 440 hPa frequently occur. The WV statistics are then used to characterize seasonal and interannual variations of both the ITCZ (InterTropical Convergence Zone) and the warm (dry) areas, corresponding to subtropical subsidence. Thanks mainly to the seasonal variations, relationships between the variations in the ITCZ and in dry subtropical areas can be studied. It is shown that, for the Meteosat sector, a wetter subtropical high troposphere is associated with an enhanced activity of the ITCZ, and vice versa. For this area where the north-south assymetry is large, the negative water vapor feedback previously proposed seems not to occur.

Influence of Deforestation on the Community Structure of Sand Flies (Diptera: Psychodidae) in Eastern Amazonia

2019 ◽  
Vol 56 (4) ◽  
pp. 1004-1012
Author(s):  
José Manuel Macário Rebêlo ◽  
Jorge Luiz Pinto Moraes ◽  
Gustavo Barbosa Vieira Cruz ◽  
Joudellys Andrade-Silva ◽  
Maria Da Conceição Abreu Bandeira ◽  
...  
Keyword(s):  
Community Structure ◽  
Species Composition ◽  
Significant Influence ◽  
Sand Fly ◽  
Forest Fragments ◽  
Sand Flies ◽  
Human Occupation ◽  
Short Term

Abstract Variation in the structure of phlebotomine (sand fly) communities in forest fragments with different degrees of preservation and human occupation (peridomicile) in eastern Amazonia was studied. We identified 43 species of sand flies in our study, of which 38 occurred in both preserved forest areas and in the peridomiciles of short-term settlements, while another 28 species occurred in altered forest fragments and long-term settlements. The composition of the community at each site changed with the type of environment (forest or peridomicile), with the species Lutzomyia evandroi, L. whitmani, L. choti, L. serrana, L. triacantha, L. migonei, L. hirsuta, L. shannoni, and L. brachyphylla accounting for more than 54% of the differences among environments. The quality of the environment exerted a significant influence on the structure of phlebotomine communities, and affected their species composition, richness, and abundance.

scholarly journals New Chronological Constraints from Hypogean Deposits for Late Pliocene to Recent Morphotectonic History of the Alpi Apuane (NW Tuscany, Italy)

Geosciences ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 65
Author(s):  
Ilaria Isola ◽  
Francesco Mazzarini ◽  
Giancarlo Molli ◽  
Leonardo Piccini ◽  
Elena Zanella ◽  
...  
Keyword(s):  
Radiometric Dating ◽  
Early Pleistocene ◽  
Late Pliocene ◽  
Mountain Ranges ◽  
Fluvial Deposits ◽  
Fine Grained ◽  
Base Level ◽  
Cave System ◽  
Cave Sediments ◽  
History Of

A sedimentary sequence of fluvial deposits preserved in the Corchia Cave (Alpi Apuane) provides new chronological constraints for the evolution of the cave system and the timing and rate of uplift of this sector of the Alpi Apuane since the late Pliocene. Supported by magnetostratigraphic analysis performed on fine-grained fluvial deposits, and by radiometric dating of speleothems, we suggest that the deposition of fluvial sediments occurred between ~1.6–1.2 Ma. This implies that the host volume of rock was already located close to the local base level, adding key information about the recent tectonic evolution of the Alpi Apuane. A few before ~1 Ma, an erosive phase occurred due to the base-level lowering, followed by continuous speleothem deposition since at least 0.97 Ma. From that time, Monte Corchia uplifted at a maximum rate of ~0.5 mm/year, which is consistent with isostatic uplift mainly driven by erosional unloading. The petrographical study of the fluvial deposits highlights the presence of material derived from the erosion of rocks that today are absent in the cave’s catchment area, suggesting a different surface morphology during the Early Pleistocene. This study highlights the potential of cave sediments as archives for reconstructing the uplift history of mountain ranges.

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