scholarly journals Coastal Boulders on the SE Coasts of Cyprus as Evidence of Palaeo-Tsunami Events

2020 ◽  
Vol 8 (10) ◽  
pp. 812
Author(s):  
Niki Evelpidou ◽  
Christos Zerefos ◽  
Costas Synolakis ◽  
Christos Repapis ◽  
Anna Karkani ◽  
...  
Keyword(s):  
Radiocarbon Dating ◽  
Field Data ◽  
Extreme Event ◽  
High Energy ◽  
Hydrodynamic Equations ◽  
Differential Gps ◽  
Upper Pleistocene ◽  
Three Samples ◽  
Lower Pleistocene ◽  
History Of

Cyprus has a long history of tsunami events, as noted by archaeological and geological records. At Cape Greco (southeastern Cyprus) large boulders have been noted, however, no detailed geomorphological research has taken place so far and the related high energy event was undated until now. Our research aims to record in detail and interpret these large boulders deposits. The boulders, located between ≈3 and 4.5 m a.m.s.l., are fragments of an upper Pleistocene aeolianite, which is overlaying unconformly a lower Pleistocene calcarenite. Dimensions and spatial distribution of 272 small, medium, and large boulders were documented, while their precise distance from the coastline was recorded by field mapping and remote sensing, using Differential GPS (DGPS), drone, and Geographic Information Systems (GIS) technics. Field data were subsequently combined with hydrodynamic equations, in order to determine the extreme event(s) that caused their transport inland, and radiocarbon dating was accomplished on three samples of Vermetus sp. to determine the chronological context. Our findings appear to broadly correlate with the 1303 AD tsunami, which has displaced at least part of the studied boulders, and one other undocumented event at AD 1512-1824. The large number of boulders and sizes in our study area further indicate that their dislocation is most likely owed to multiple events from various sources.

scholarly journals The oldest platylepadid turtle barnacle (Cirripedia, Coronuloidea): a new species of Platylepas from the Lower Pleistocene of Italy

2019 ◽  
Author(s):  
Alberto Collareta ◽  
Agatino Reitano ◽  
Antonietta Rosso ◽  
Rossana Sanfelippo ◽  
Mark Bosselaers ◽  
...  
Keyword(s):  
New Species ◽  
Fossil Record ◽  
Mediterranean Region ◽  
Evolutionary History ◽  
Sea Turtle ◽  
Upper Pleistocene ◽  
The Family ◽  
Lower Pleistocene ◽  
History Of ◽  
A New Species

Coronuloid barnacles are epibionts of several marine vertebrates (including cetaceans and sea turtles) as well as invertebrates, and are assigned to two families of turtle barnacles (Chelonibiidae Pilsbry, 1916 and Platylepadidae Newman & Ross, 1976) and one family of whale barnacles (Coronulidae Leach, 1817). Chelonibiids and coronulids have a scanty, albeit significant fossil record extending back to the Eocene and Pliocene, respectively; in turn, the fossil record of platylepadids is limited to a single record from the Upper Pleistocene. Here we report on an isolated carinolateral compartment of Platylepas Gray, 1825, the type genus of the family, from Lower Pleistocene (Gelasian) epibathyal deposits exposed at Milazzo (Sicily, Italy). This specimen is here designated holotype of a new species, †Platylepas mediterranea sp. nov. We argue that, like most extant members of Platylepas, †P. mediterranea sp. nov. lived partially embedded in the skin of a sea turtle. This record of an extinct platylepadid – the first from the Mediterranean region and the second worldwide – pushes back the fossil record of Platylepadidae to the lowermost Quaternary, thus possibly supporting an even earlier (e.g., Neogene) timing for the origin of this family and adding a new chapter to the evolutionary history of one of the most diverse and successful lineages of epizoic crustaceans.

Boulder deposits on the southeastern coast of Cyprus and their relation with paleotsunami events of the Eastern Mediterranean

2020 ◽  
Author(s):  
Niki Evelpidou ◽  
Christos Zerefos ◽  
Costas Synolakis ◽  
Christos Repapis ◽  
Anna Karkani ◽  
...  
Keyword(s):  
Intertidal Zone ◽  
Extreme Event ◽  
Eastern Mediterranean ◽  
High Energy ◽  
Morphometric Measurements ◽  
Marine Gastropods ◽  
Tsunami Waves ◽  
Lower Pleistocene ◽  
Wave Heights ◽  
Boulder Deposits

<p>Cyprus has a long record of tsunami waves, as noted by archaeological and geological records. Large boulder deposits have been noted in the southeastern and western part of the Island. At Cape Greco (southeastern Cyprus) large boulders have been noted, however, no detailed geomorphological research has taken place so far and the related high energy event remains undated. Our research focuses at Cape Greco Peninsula in order to record in detail and interpret the large boulders deposits. The boulders, located at 3 m amsl, are fragments of a layer of an upper Pleistocene aeolianite, which is overlaying unconformly a lower Pleistocene calcarenite. Dimensions and spatial distribution of 272 small, medium and large boulders were documented, while their precise distance from the coastline was recorded by field mapping and remote sensing, using GNSS, drone and GIS technics. Several large boulders weighting more than ~30 metric tons were found up to 60m inland. Geomorphologic mapping and morphometric measurements, along with the presence of marine organisms suggests that some of the boulders were removed from their original intertidal zone and were transported inland by the force of large waves. In this work, we attempt to determine the extreme event that caused their transport inland. We further attempt a correlation of the event with already known tsunami events from Eastern Mediterranean, based on the estimated wave heights and the radiocarbon dating of marine gastropods (<em>Vermetus sp.</em>).</p>

The E-ring: interactions with plasma and implications for its evolution

1984 ◽  
Vol 75 ◽  
pp. 599-602
Author(s):  
T.V. Johnson ◽  
G.E. Morfill ◽  
E. Grun
Keyword(s):  
Time Scale ◽  
Particle Density ◽  
High Energy ◽  
Particle Removal ◽  
Density Region ◽  
Drag Forces ◽  
Orbit Evolution ◽  
History Of ◽  
Ring Particle ◽  
Ring Material

A number of lines of evidence suggest that the particles making up the E-ring are small, on the order of a few microns or less in size (Terrile and Tokunaga, 1980, BAAS; Pang et al., 1982 Saturn meeting; Tucson, AZ). This suggests that a variety of electromagnetic and plasma affects may be important in considering the history of such particles. We have shown (Morfill et al., 1982, J. Geophys. Res., in press) that plasma drags forces from the corotating plasma will rapidly evolve E-ring particle orbits to increasing distance from Saturn until a point is reached where radiation drag forces acting to decrease orbital radius balance this outward acceleration. This occurs at approximately Rhea's orbit, although the exact value is subject to many uncertainties. The time scale for plasma drag to move particles from Enceladus' orbit to the outer E-ring is ~104yr. A variety of effects also act to remove particles, primarily sputtering by both high energy charged particles (Cheng et al., 1982, J. Geophys. Res., in press) and corotating plasma (Morfill et al., 1982). The time scale for sputtering away one micron particles is also short, 102 - 10 yrs. Thus the detailed particle density profile in the E-ring is set by a competition between orbit evolution and particle removal. The high density region near Enceladus' orbit may result from the sputtering yeild of corotating ions being less than unity at this radius (e.g. Eviatar et al., 1982, Saturn meeting). In any case, an active source of E-ring material is required if the feature is not very ephemeral - Enceladus itself, with its geologically recent surface, appears still to be the best candidate for the ultimate source of E-ring material.

Pleistocene Terraces of the Alto Henares (Guadalajara), Spain

1972 ◽  
Vol 2 (4) ◽  
pp. 473-486 ◽  
Author(s):  
Bruce G. Gladfelter
Keyword(s):  
Radiocarbon Dating ◽  
Drainage System ◽  
Middle Pleistocene ◽  
Ebro Basin ◽  
Lower Paleolithic ◽  
Lower Pleistocene

A suite of four terraces in the upper Rio Henares drainage system (Rio Tajo basin) now provides a partial geomorphological link between the Middle Pleistocene, Lower Paleolithic archeological sites at Ambrona and Torralba (upper Ebro basin) and those in the vicinity of Madrid. The Campiña and Low Terrace features are shown by radiocarbon dating to be of Holocene and Würm ages, respectively, while the Middle and High Terraces are best designated as being Middle and Lower Pleistocene ages, respectively. Stratigraphic relationships between the upper and lower Rio Henares segments need to be established.

scholarly journals High-resolution late Holocene sedimentary cores record the long history of the city of Cádiz (south-western Spain)

2020 ◽  
Vol 27 ◽  
pp. 35-47
Author(s):  
Ferréol Salomon ◽  
Darío Bernal-Casasola ◽  
José J. Díaz ◽  
Macarena Lara ◽  
Salvador Domínguez-Bella ◽  
...  
Keyword(s):  
Western Europe ◽  
High Energy ◽  
Mitigation Strategies ◽  
Urban Centre ◽  
Archaeological Data ◽  
Lisbon Earthquake ◽  
History Of ◽  
Western Spain ◽  
The One ◽  
The City

Abstract. Today, coastal cities worldwide are facing major changes resulting from climate change and anthropogenic forcing, which requires adaptation and mitigation strategies to be established. In this context, sedimentological archives in many Mediterranean cities record a multi-millennial history of environmental dynamics and human adaptation, revealing a long-lasting resilience. Founded by the Phoenicians around 3000 years ago, Cádiz (south-western Spain) is a key example of a coastal resilient city. This urban centre is considered to be one of the first cities of western Europe and has experienced major natural hazards during its long history, such as coastal erosion, storms, and also tsunamis (like the one in 1755 CE following the destructive Lisbon earthquake). In the framework of an international, joint archaeological and geoarchaeological project, three cores have been drilled in a marine palaeochannel that ran through the ancient city of Cádiz. These cores reveal a ≥50 m thick Holocene sedimentary sequence. Importantly, most of the deposits date from the 1st millennium BCE to the 1st millennium CE. This exceptional sedimentary archive will allow our scientific team to achieve its research goals, which are (1) to reconstruct the palaeogeographical evolution of this specific coastal area; (2) to trace the intensity of activities of the city of Cádiz based on archaeological data, as well as geochemical and palaeoecological indicators; and (3) to identify and date high-energy event deposits such as storms and tsunamis.

scholarly journals Off-the-Grid Life of Arctic Nomads: Social Generating of Electricity in the Northern Yamal

2019 ◽  
pp. 1356-1373 ◽  
Author(s):  
Dmitry V. Arzyutov
Keyword(s):  
Social Life ◽  
Field Data ◽  
The Arctic ◽  
Yamal Peninsula ◽  
Historical Documents ◽  
Cultural Meanings ◽  
History Of ◽  
Ethnographic Analysis ◽  
The Yamal Peninsula

This article deals with the ethnographic analysis of the history and social life of electricity among Nenets in the Yamal Peninsula. Based on historical documents and field data the author reconstructs a history of the electrification of the northern part of the peninsula. This work also includes the reflections on social and cultural meanings of electricity among Nenets in and out the tundra. Through these historical and current dynamics, the author suggests analysing the life of electricity in off-the-grid settings through the lens of transnational technological entanglements in the Arctic

Geology and petrochemistry of lower Aphebian (2.4–2.0 Ga) alkaline plutonic and hypabyssal rocks in the East Arm of Great Slave Lake, Northwest Territories

1979 ◽  
Vol 16 (1) ◽  
pp. 60-72 ◽  
Author(s):  
J. P. N. Badham
Keyword(s):  
Northwest Territories ◽  
Field Data ◽  
Easter Island ◽  
Chemical Data ◽  
Lower Proterozoic ◽  
Great Slave Lake ◽  
Data Support ◽  
Igneous Complexes ◽  
Igneous Activity ◽  
History Of

Two alkaline igneous complexes and three lines of diatreme breccias were emplaced in the East Arm of Great Slave Lake during the lower Proterozoic. Field relationships suggest that those rocks are broadly cogenetic and were emplaced about 2.1 Ga ago.One of the intrusions, the Easter Island dyke, was rotated subsequent to emplacement such that both top and bottom are now exposed. Field and petrographic data are indicative of progressive differentiation along (i.e., up) the dyke and are substantiated by chemical data. The differentiation history of the early gabbros of the Blachford Lake complex is similar. Late differentiates of both complexes closely resemble the igneous matrices of the breccias and petrographic and chemical data support the proposal of cogenesis and contemporaneity.The field data show that there was a period of significant faulting and concomitant alkaline igneous activity in the East Arm area in the lower Proterozoic.

scholarly journals A History of Maritime Radio-Navigation Positioning Systems used in Poland

2016 ◽  
Vol 69 (3) ◽  
pp. 468-480 ◽  
Author(s):  
Cezary Specht ◽  
Adam Weintrit ◽  
Mariusz Specht
Keyword(s):  
World Literature ◽  
Primary Method ◽  
Differential Gps ◽  
Positioning Systems ◽  
Limited Volume ◽  
Radio Navigation ◽  
History Of

This paper describes the genesis, the principle of operation and characteristics of selected radio-navigation positioning systems, which in addition to terrestrial methods formed a system of navigational marking constituting the primary method for determining the location in the sea areas of Poland in the years 1948–2000, and sometimes even later. The major ones are: maritime circular radiobeacons (RC), Decca-Navigator System (DNS) and Differential GPS (DGPS), as well as solutions forgotten today: AD-2 and SYLEDIS. In this paper, due to its limited volume, the authors have omitted the description of the solutions used by the Polish Navy (RYM, BRAS, JEMIOŁUSZKA, TSIKADA) and the global or continental systems (TRANSIT, GPS, GLONASS, OMEGA, EGNOS, LORAN, CONSOL) - described widely in world literature.

Population of Chernigov in the 10th–13th Centuries According to Paleodemographic Data

Epohi ◽  
2021 ◽  
Vol 29 (2) ◽  
Author(s):  
Yurii Dolzhenko ◽  
◽  
Anna Tarasova
Keyword(s):  
Life Quality ◽  
Demographic Structure ◽  
13Th Century ◽  
Average Life ◽  
Average Life Expectancy ◽  
Three Samples ◽  
History Of ◽  
The City ◽  
Shed Light ◽  
Different Parts

The work is devoted to the 10th–13th-century paleodemographic data regarding the city of Chernigov and its districts, and to their introduction into the scientific domain. The study is based on the data on the anthropological series of Chernigov in the 10th–13th centuries, divided into three samples according to the topographic principle. This series is characterized by a low average life expectancy in comparison to other southern Old Rus cities. The feature of the necropolises of Chernigov indicating the predominance of female burials over male ones, revealed in the 1980s, has been confirmed at a new level. A study of the demographic parameters of the Chernigov population groups in the 10th–13th centuries, united on a territorial basis, has shown differences in their structure, probably reflecting the peculiarities of the life quality, social status, and professional specialization of the population of different parts of the city. Further research into the remains of the city’s population with methods of paleopathology, osteometry, osteoscopy, radiology, etc., as well as the analysis of aspects of the political history of the region, would help shed light on the possible causes of the identified features of the demographic structure of the population in the pre-Mongolian period.

The Political History of Megiddo in the Early Iron Age and the Ambiguities of Evidence

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Zachary Thomas
Keyword(s):  
Iron Age ◽  
Radiocarbon Dating ◽  
Political History ◽  
The Political ◽  
Early Iron Age ◽  
Historical Sources ◽  
Ongoing Debate ◽  
Iron Age I ◽  
History Of ◽  
Historical Developments

Abstract This article reviews the major problems in the political history of Megiddo during the early Iron Age (Iron Age I–IIA), at the time of the early monarchic period in Israel (eleventh–ninth centuries BCE). Megiddo has been central to an ongoing debate over the nature of the early monarchic period in Israel and the exact chronology of the Iron Age I–IIA periods. This importance derives both from the extensive excavations of the relevant strata at Megiddo (VIA, VB and VA-IVB) as well as Megiddo’s appearance in relevant historical sources, namely the Hebrew Bible, which claims that Solomon “built” Megiddo, and its appearance in the campaign list of pharaoh Sheshonq I. Though the fragment of a stela of Sheshonq I was found at Megiddo, it was only found after having been discarded and so its stratigraphic attribution is unclear. Radiocarbon dating from these strata has assisted to some degree but still left dating and historical questions quite open. This article will demonstrate that the political history of Megiddo during the early Iron Age is beset with ambiguities in the evidence, which have been divided into seven ambiguities for the purpose of the discussion here. When these ambiguities are taken into account, it becomes clear that the interpreter has much latitude in making their reconstruction, specifically in how they date strata and associate them with putative historical developments. Different cases can be made for associating particular strata and their termination with Solomon, Sheshonq or even later kings, but none can claim to objectively be the correct or superior reconstruction.

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