The Excavation of Nympsfield Long Barrow, Gloucestershire

1938 ◽  
Vol 4 (1) ◽  
pp. 188-213 ◽  
Author(s):  
Elsie M. Clifford
Keyword(s):  
Sea Level ◽  
Rural District ◽  
North West ◽  
The North

The Nympsfield long barrow is situated in the parish of Frocester, but is less than a mile to the north-west of Nympsfield village. The boundaries of the Parish, the Rural District and the Union, run from north to south down the centre of the field, called ‘Buckholt End,’ in which it lies. The position of the barrow is latitude 51° 42′ 35″ and longitude 2° 17′ 54″ (six-inch O.S., Gloucs. XLIX S.W.) and its height 750 feet above sea level. Ninety yards to the east of the barrow there is a road, marked by Grundy as a ‘ridgeway,’ which now runs from Selsley Hill to Uley (fig. 1). The underlying rock is the Inferior Oolite, a formation separable into numerous sub-divisions, here including, in descending order, Clypeus Grit, Upper Trigonia Grit and Upper Freestone. The greater part of the barrow, if not the whole of it rests on Clypeus Grit.

scholarly journals The impact of sea-level rise on tidal characteristics around Australia

Ocean Science ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 147-159 ◽  
Author(s):  
Alexander Harker ◽  
J. A. Mattias Green ◽  
Michael Schindelegger ◽  
Sophie-Berenice Wilmes
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Open Boundary ◽  
Open Boundary Conditions ◽  
Tidal Dissipation ◽  
North West ◽  
The North ◽  
Tidal Changes ◽  
Tidal Characteristics ◽  
The Impact

Abstract. An established tidal model, validated for present-day conditions, is used to investigate the effect of large levels of sea-level rise (SLR) on tidal characteristics around Australasia. SLR is implemented through a uniform depth increase across the model domain, with a comparison between the implementation of coastal defences or allowing low-lying land to flood. The complex spatial response of the semi-diurnal M2 constituent does not appear to be linear with the imposed SLR. The most predominant features of this response are the generation of new amphidromic systems within the Gulf of Carpentaria and large-amplitude changes in the Arafura Sea, to the north of Australia, and within embayments along Australia's north-west coast. Dissipation from M2 notably decreases along north-west Australia but is enhanced around New Zealand and the island chains to the north. The diurnal constituent, K1, is found to decrease in amplitude in the Gulf of Carpentaria when flooding is allowed. Coastal flooding has a profound impact on the response of tidal amplitudes to SLR by creating local regions of increased tidal dissipation and altering the coastal topography. Our results also highlight the necessity for regional models to use correct open boundary conditions reflecting the global tidal changes in response to SLR.

Ritual Inscriptions from Uzundara

2021 ◽  
pp. 250
Author(s):  
Nigora D. Dvurechenskaya
Keyword(s):  
Sea Level ◽  
Natural Boundary ◽  
Crucial Point ◽  
North West ◽  
The North ◽  
Archaeological Materials

The paper presents three Greek votive graffiti from the excavations of citadel of Fortress Uzundara (Uzbekistan) and describes their archaeological context. This fortress is located on the North-West Border of Ancient Bactria, and represents the crucial point in the tens–kilometers long borderline fortification system in this area. It is built at altitude of 1700 meters above the sea level. The fortress stands on the narrow (220 meters) neck between the precipitous walls of the natural boundary Kara-Kamar and the canyon Uzundara, and locks the pass for the equestrian troops intent to bypass the borderline wall of Darband in 7 kilometers northward. It consists of the principal rhomboid castle, a detached and adjacent triangular citadel, same sections of the external walls, and of three external towers. The main goal of this fortress was the warning of the sudden attack of nomads from the Karshin steppes. A military garrison was stationed in the Uzundara fortress – a Seleucid frurion in the first quarter of the 3rd century BC. Apparently at this time it consisted of Macedonians and Greeks. This is clearly evidenced by archaeological materials, including epigraphic ones. We analyze three artefacts voted to Demeter of the Mountains and the Borderline, Zeus–Mitra, and Zoroastrian Deity Srosh. The most complete inscription – votive to Demeter – persists on the three fragments of tagora (luterium) which could be used for the ritual ablution. They were founded in different years and in different places around the ovoid cellar on the rocky complex of the citadel Uzundara.

scholarly journals I.—The Kishon and Jordan Valleys

1904 ◽  
Vol 1 (12) ◽  
pp. 575-582 ◽  
Author(s):  
T. G. Bonney
Keyword(s):  
Sea Level ◽  
Difficult Problem ◽  
The South ◽  
North West ◽  
The North ◽  
South West ◽  
Western Side ◽  
Physical Geology

That broad trench through the Palestine Highlands, an ancient highway and battlefield of nations—the plain of Esdraelon or the valley of Megiddo, together with the plain of Acre—has for long presented to me a difficult problem in Physical Geology, for it seemed inexplicable by subaerial denudation under existing conditions. Its floor varies roughly from five to eight miles in breadth; running approximately from south-east to north-west, it is bounded on the more western side by the limestone mountains of Samaria and on the more eastern by those of Galilee. The former descend from the ridge of Carmel (1,742 feet at highest) with a fairly steep escarpment, which becomes a little less regular as we follow it to the bastion-mass of Mount Gilboa; the latter correspond in their general outlines with those of the eastern portion of Samaria, but the advance of a lower spur towards the south-west divides the plain of Esdraelon from that of Acre, by a kind of strait in which, so far as I could see, there is but little level ground on either side of the Kishon. This spur, however, of the northern hills, hardly does more than interrupt the floor of the Kishon valley, for above it the great trench is continued between two hill masses, much of these ranging from thirteen to sixteen hundred feet above sea-level. Beyond the strait the upper basin (plain of Esdraelon) quickly broadens out, extending towards the south-east for about fifteen or sixteen miles, where it is divided into two arms by Jebel Duhy (Little Hermon) (1,690 feet), which is thus isolated from Tabor (1,846 feet) on the north, and from Gilboa (1,698 feet) on the south; a broad, rather shallow, grassy valley descending from the last-named mass to lose itself in the plain.

Further Discoveries of Flint Implements in the Brown Boulder Clay of North-West Norfolk

1932 ◽  
Vol 6 (4) ◽  
pp. 306-315 ◽  
Author(s):  
J. Reid Moir
Keyword(s):  
Sea Level ◽  
Geological Survey ◽  
Prehistoric Archaeology ◽  
East Anglia ◽  
North West ◽  
Terminal Moraine ◽  
The North ◽  
Boulder Clay ◽  
Western Portion ◽  
North Western

Since my original paper on the flint implements found in the Brown Boulder Clay of north-west Norfolk, I have continued my researches in that region, and now wish to give some account of these, and of the further specimens which have been discovered in this most recent boulder clay of East Anglia. I would take this opportunity of thanking the Trustees of the Percy Sladen Fund for their kindness in supporting this research with a money grant, and so enabling me to continue my examination of an era of much interest and importance to prehistoric archæology. I am also very grateful to my friends, Mr. J. B. Calkin, Mr. Guy Maynard, and Mr. J. S. Fisher, for the valuable help they have given me in carrying out the investigation of the Brown Boulder Clay.As is now widely known, this deposit, so far as Norfolk is concerned, is confined to the north-western portion of that county, and many years ago was examined and reported upon by the Geological Survey in two of their memoırs. The Brown Boulder Clay occurs approximately at sea-level at Hunstanton, while at Brancaster, as reported by Mr. Clement Reid, the deposit is exposed at low water upon the foreshore, underlying the ‘submerged forest’ which he saw there. At other places, such as Holkham brickfield, and the remarkable formation (probably a terminal moraine) in Hunstanton Park, the boulder clay rests at about 50 ft, above O.D.

scholarly journals The impact of sea-level rise on tidal characteristics around Australasia

2018 ◽  
Author(s):  
Alexander Harker ◽  
J. A. Mattias Green ◽  
Michael Schindelegger
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Tidal Dissipation ◽  
North West ◽  
The North ◽  
Arafura Sea ◽  
Coastal Features ◽  
Tidal Characteristics ◽  
Shelf Region ◽  
The Impact

Abstract. An established tidal model, validated for present-day conditions, is used to investigate the effect of large levels of sea-level rise (SLR) on tidal characteristics around Australasia. SLR is implemented through a uniform depth increase across the model domain, with a comparison between the coastal boundary being treated as impenetrable or allowing low-lying land to flood. The complex spatial response of the semi-diurnal constituents, M2 and S2, is broadly similar, with the magnitude of M2's response being greater. The most predominant features of this response are large amplitude changes in the Arafura Sea and within embayments along Australia's north-west coast, and the generation of new amphidromic systems within the Gulf of Carpentaria and south of Papua, once water depth across the domain is increased by 3 and 7 m respectively. Dissipation from M2 increases around the islands in the north of the Sahul shelf region and around coastal features along north Australia, leading to a notable drop in dissipation along Eighty Mile Beach. The diurnal constituent, K1, is found to be amplified within the Gulf of Carpentaria, indicating a possible change of resonance properties of the gulf. Coastal flooding has a profound impact on the response of tidal amplitudes to SLR, particularly K1, by creating local regions of increased tidal dissipation and altering the shape of coastlines.

scholarly journals Holocene sea-level change and estuary infill in North West Nelson, central New Zealand

The Holocene ◽  
2021 ◽  
pp. 095968362110604
Author(s):  
David M Kennedy ◽  
Beth V Risdon ◽  
Josephine LD Woods
Keyword(s):  
New Zealand ◽  
Sea Level ◽  
Central Basin ◽  
Marine Transgression ◽  
The Holocene ◽  
North West ◽  
Sedimentary Sequences ◽  
The North ◽  
History Of ◽  
Holocene Sea Level

The sedimentary sequences found within estuaries in the north west Nelson region of central New Zealand are investigated in order to quantify the timing of the end of the Post Glacial Marine Transgression. This region has been identified as being relatively stable in terms of vertical tectonic movement during the Holocene, but is yet to yield any reconstructions of eustatic sea level. In this study, we investigate the Holocene infill of a barrier estuary (Parapara Inlet) through sedimentological analysis and radiocarbon dating of 18 vibracores up to 4.2 m in length. It is found that the estuary infilled through a combination of lateral flood tide and fluvial delta progradation as well as vertical central basin infill. The central basin infilled at a consistent rate of 0.4 mm/year in both the mid (7.0–6.0 ka) and late-Holocene (2.5–1.5 ka). By the time of early human (Maori) settlement (c. 1 ka), the estuary surface was at low intertidal elevations with sediment being transported from the fluvial to tidal delta. A discernible change in sedimentation rates could not be associated with Maori settlement; however, infill rates increased to at least 12.5 mm/year in the past 150 years due hydraulic sluicing associated with mining. The sedimentary history of Parapara Inlet is compared to nearby Whanganui Inlet, d’Urville Island and Nelson to establish the character of regional Holocene sea level movement. It is found that relative sea level reached modern elevations between 8 and 7 ka in the region. The similarity between sea level curves for the end of the post glacial marine transgression (PMT) to other tectonically stable sites in northern New Zealand suggests that this curve can now be considered a true eustatic signal for the New Zealand archipelago.

scholarly journals Large-scale changes of the semidiurnal tide along North Atlantic coasts from 1846 to 2018

Ocean Science ◽  
2021 ◽  
Vol 17 (1) ◽  
pp. 17-34
Author(s):  
Lucia Pineau-Guillou ◽  
Pascal Lazure ◽  
Guy Wöppelmann
Keyword(s):  
Sea Level ◽  
North Atlantic ◽  
Large Scale ◽  
Low Frequency ◽  
Underlying Mechanism ◽  
East Atlantic ◽  
North West ◽  
North East ◽  
The North ◽  
The North Atlantic

Abstract. We investigated the long-term changes of the principal tidal component M2 along North Atlantic coasts, from 1846 to 2018. We analysed 18 tide gauges with time series starting no later than 1940. The longest is Brest with 165 years of observations. We carefully processed the data, particularly to remove the 18.6-year nodal modulation. We found that M2 variations are consistent at all the stations in the North-East Atlantic (Cuxhaven, Delfzijl, Hoek van Holland, Newlyn, Brest), whereas some discrepancies appear in the North-West Atlantic. The changes started long before the 20th century and are not linear. The secular trends in M2 amplitude vary from one station to another; most of them are positive, up to 2.5 mm/yr at Wilmington since 1910. Since 1990, the trends switch from positive to negative values in the North-East Atlantic. Concerning the possible causes of the observed changes, the similarity between the North Atlantic Oscillation and M2 variations in the North-East Atlantic suggests a possible influence of the large-scale atmospheric circulation on the tide. Our statistical analysis confirms large correlations at all the stations in the North-East Atlantic. We discuss a possible underlying mechanism. A different spatial distribution of mean sea level (corresponding to water depth) from one year to another, depending on the low-frequency sea-level pressure patterns, could impact the propagation of the tide in the North Atlantic basin. However, the hypothesis is at present unproven.

The Place of Kastabos in Greek Architecture

1963 ◽  
Vol 9 ◽  
pp. 10-21
Author(s):  
W. H. Plommer
Keyword(s):  
Sea Level ◽  
Short Duration ◽  
Forest Fire ◽  
Fourth Century ◽  
North West ◽  
One Stage ◽  
The North ◽  
Greek Architecture ◽  
Formed Part ◽  
The Temple

The following article forms the conclusion to my chapter in a projected work on the Temple of Hemithea at Kastabos. The sanctuary is described by Diodorus in Book v, 62—3, and lies about a thousand feet above sea-level on the north-west slopes of the Carian Chersonese, overlooking from the south-east the more easterly isthmus on the long Cnidian Peninsula. It is the first Greek sanctuary of any importance and the first peripteral temple to be explored in the Rhodian Incorporated Peraea (see Fraser and Bean, The Rhodian Peraea and Islands, pp. 123 ff.), of which the whole Chersonese formed part.Our excavation, primarily salvage-work in remote country after a forest-fire had uncovered the remains, formed one stage in the mapping of ancient cities and demes of this neighbourhood by Professor John Cook and Professor George Bean. It established, from a stamped vase-handle and an inscription on a subsidiary building, that this was indeed, as surmised by Cook, the shrine of Hemithea, a local healing-goddess evidently, as Diodorus shows, of considerable local repute. We found that its greatness virtually began in the late fourth century, and was perhaps of fairly short duration.

scholarly journals Glacial and Subglacial Topography of West Antarctica

1961 ◽  
Vol 3 (29) ◽  
pp. 882-911 ◽  
Author(s):  
Charles R. Bentley ◽  
Ned A. Ostenso
Keyword(s):  
Sea Level ◽  
Open Water ◽  
West Antarctica ◽  
Ice Flow ◽  
North West ◽  
Mountainous Regions ◽  
The North ◽  
Subglacial Topography ◽  
Rock Interface ◽  
Altimetric Measurements

AbstractA summary of the techniques used and results obtained from three oversnow traverses in Marie Byrd Land and the Ellsworth Highland between January 1957 and January 1959 is presented. Seismic reflection shooting at 30 nautical mile (55.5 km.) intervals was combined with gravity, magnetic and altimetric measurements to determine the glacial and subglacial topography. It was found that a vast portion of West Antarctica has an ice–rock interface well below sea-level. A major connecting channel with a maximum depth of more than 2,500 m. below sea-level exists between the Ross and Bellingshausen–Amundsen Seas, whereas there is no major topographic connection between the Ross and Weddell Seas. This channel divides West Antarctica into two provinces with granite and rocks of sedimentary origin to the east and south, and a volcanic region to the north-west. Present ice flow is outward from two high areas, centred over mountainous regions on either side of the channel. It is concluded that the present ice sheet has grown from the convergence of the two smaller ice sheets which formed in the mountainous areas and joined across the intervening open water.

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