A STUDY OF AURORAL MOTIONS FROM ALL-SKY CAMERA RECORDS

1960 ◽  
Vol 38 (10) ◽  
pp. 1279-1290 ◽  
Author(s):  
B. K. Bhattacharyya
Keyword(s):  
Distribution Curve ◽  
Magnetic Disturbance ◽  
The South ◽  
The West ◽  
Systematic Process ◽  
Disturbance Vector ◽  
Two Peaks ◽  
North And South ◽  
East West

A study of horizontal motions of visual aurorae as recorded by a 35-mm all-sky camera at Springhill (geographic 45.2 °N., 75.5 °W.; geomagnetic 56.5 °N., 6.9 °W.) near Ottawa has been carried out. The number of occurrences of motions in all the four geomagnetic directions, east, west, north, and south appears to reach its peak within a range of speed from 0 to 150 m/sec and tends to decrease with increase in speed. Very large speeds seem more frequently to be associated with motions to the west and to the south. The distribution curve of speed with the time of night appears to have two peaks, one before and another after midnight, in all the four cases. Auroral motion is predominantly westward in the early part of the night and eastward in the late hours of the night. The reversal of motion from westward to eastward direction seems to be a systematic process, the declining and inclining portions of the two curves as a function of time meeting each other somewhat before local midnight.Auroral speeds either along or perpendicular to geomagnetic parallels of latitude increase nearly linearly with the horizontal and vertical components of the magnetic disturbance vector.

Ancient Cultivations at Housesteads, Northumberland

Antiquity ◽  
1931 ◽  
Vol 5 (19) ◽  
pp. 351-354
Author(s):  
W. Percy Hedley
Keyword(s):  
The South ◽  
The West ◽  
South Side ◽  
Close Proximity ◽  
Hadrian's Wall ◽  
The Military ◽  
The Hill ◽  
North And South

The Roman Fort of Borcovicium at Housesteads in Northumberland should need no introduction to anyone interested in archaeology. During the last year it has been brought into great prominence by being presented to the Nation by Mr John Maurice Clayton, and through its close proximity to the portion of Hadrian’s Wall recently threatened by quarrying operations.The fort at Housesteads was one of the earliest to be examined by British antiquaries, but although it has received so much attention its environs have been almost entirely disregarded. On both sides of the Military Way leading out of the west gateway was an extensive civil settlement, and traces of buildings can be seen on the south side of the fort. The hillside sloping to the southward is covered with the remains of early cultivations. These have generally been accepted as of Romano-British age. There are, however, two distinct systems of early cultivation. To the southwest of the fort there is a series of terraces running along the hillside, but on the southeast of the fort there are lynchets running north and south at regular interva up and down the hillside. From the hill to the south of Housesteads it can be clearly seen that where there is terrace cultivation it has been superimposed on the earlier system of lynchets, and this is also shown in air photographs.

XI.—The Glaciation of Holyhead Mountain

1904 ◽  
Vol 1 (10) ◽  
pp. 504-505
Author(s):  
Edward Greenly
Keyword(s):  
Irish Sea ◽  
General Level ◽  
The South ◽  
The West ◽  
Scottish Highlands ◽  
The North ◽  
The Irish Sea ◽  
North And South ◽  
Sea Cliffs

The bare and rocky hill known as Holyhead Mountain is of considerable interest in connection with recent geological events, standing as it does some thirty miles out from the highlands of Carnarvonshire into the Irish Sea Basin; and in such remarkable isolation, for it is much the highest of the five hills which rise above the general level of the platform of Anglesey.Its height is only 721 feet, but so strongly featured is it, especially towards the west, that one feels the term ‘mountain’ to be no misnomer, and can hardly believe it to be really lower than many of our smooth wolds and downs of Oolite and Chalk. Being composed, moreover, of white quartzite (or more properly of quartzite-schist), and being so bare of vegetation, it recalls much more vividly certain types of scenery in the Scottish Highlands than anything in those Welsh mountains that one sees from its sides. Towards the east it slopes at a moderate angle, but a little west of the summit it is traversed by a very strong feature, due to a fault, running nearly north and south, along which is a line of great crags, facing west, and prolonged northwards into the still greater sea cliffs towards the North Stack. Beyond this the land still remains high, but is smoother in outline, a somewhat softer series of rocks extending from the fault to the South Stack, where the high moors end off in great cliffs above the sea.

Observations in the South Sandwich Islands, 1962

Polar Record ◽  
1963 ◽  
Vol 11 (73) ◽  
pp. 394-405 ◽  
Author(s):  
M. W. Holdgate
Keyword(s):  
Island Arc ◽  
Deep South ◽  
Volcanic Island ◽  
The South ◽  
The West ◽  
Antarctic Region ◽  
South Sandwich Islands ◽  
Scotia Arc ◽  
The Antarctic ◽  
North And South

The South Sandwich Islands lie between lats. 56° 18′ S. and 59° 28′ S., and between longs. 26° 14′ W., and 28° 11′ W. There are eleven islands, of which ten form a curved chain stretching north and south while the eleventh, Leskov Island, lies to the west of the group near its northern end. The group is the only typical volcanic island arc in the Antarctic region and forms the easternmost section of the Scotia Arc; to the east it is bounded by the associated deep South Sandwich Trench.

On the number of Patella species in south-west England

1980 ◽  
Vol 60 (3) ◽  
pp. 565-574 ◽  
Author(s):  
Patrick M. Gaffney
Keyword(s):  
Morphological Variation ◽  
West Coast ◽  
Gel Electrophoresis ◽  
The South ◽  
The West ◽  
Enzyme Systems ◽  
South West ◽  
South West Coast ◽  
East West ◽  
South West England

Limpet populations of the genus Patella from the south-west coast of England were examined by means of gel electrophoresis in order to settle debate on the specific status of the three Patella forms. Populations varied morphologically along an east-west gradient, from three distinct forms in the west to continuous intergradation in the east, in accord with earlier studies. Patella collected were divided into three groups on the basis of a complex of external features described by earlier workers, corresponding to the morphologically defined taxa P. vulgata Linn., 1758, P. aspera Röding, 1798, and P. depressa Pennant, 1777. These groups were electrophoretically distinct in five of seven enzyme systems examined, with no hybrids or intermediates. Incomplete speciation and hybridization can be ruled out as possible causes of the observed morphological variation.

The Petrography of the Sands of the Upper Lias and Lower Inferior Oolite in the West of England

1924 ◽  
Vol 61 (6) ◽  
pp. 246-264 ◽  
Author(s):  
P. G. H. Boswell
Keyword(s):  
Mineralogical Composition ◽  
Fine Sand ◽  
General Character ◽  
Reciprocal Relation ◽  
The South ◽  
The West ◽  
South West ◽  
North And South ◽  
Pale Green

The main conclusions of the paper may be briefly stated thus:—1. The deposits, which are of neritic facies, possess a characteristic and peculiar mechanical and mineralogical composition, differing therein from any other British deposit.2. They exhibit a general constancy in grade from the Dorset coast to the Cotteswolds. Within this limit they conform to two chief types containing respectively 40 to 50 and 60 to 80 per cent, of the very fine sand grade (greater than 0·05 and less than 0·1 mm.). No variation of mechanical composition with hemeral change can be observed.3. The sands are blue and glauconitic in depth. At the surface they are decalcified and are yellow and brown as a result of oxidation. Minerals such as pyrite and pyrrhotite occur only in depth.4. The mineralogical composition indicates an abundance of highly angular brownish-pink to colourless garnets (possibly derived from rocks like those of the Lizard), but few red or purplish-red varieties; also of micas (including a pseudo-uniaxial, pale-green to colourless variety), together with chlorite, chloritoid, kyanite, staurolite, orthoclase, and microcline.5. Tourmaline is only moderately common and is always the grey-brown variety.6. The abundance of titanium-minerals is characteristic of the deposits. Red and yellow varieties of rutile and sagenite-webs are exceedingly abundant, and anatase, brookite, and sphene are locally so. A reciprocal relation may exist between the occurrence of sphene, ilmenite, and the oxides of titanium.7. Epidote and glaucophane are rare.8. Chlorite, chloritoid, glaucophane, kyanite, and staurolite increase in quantity as the deposits are traced southwards.9. A change in lithology and mineralogy sets in as the deposits are followed north-eastwards into the Midlands and Yorkshire.10. The sands differ markedly in petrology from the various Palæozoic rocks of Wales and the West Country, from the Trias, and from the Cretaceous and Eocene of Devon and Dorset.11. The Ordovician, Domerian, Toarcian, and Aalenian of Normandy and Brittany have been examined petrologically for purposes of comparison, but show little resemblance to the sediments under discussion, having been derived locally from the Palæozoic and pre-Cambrian rocks.12. It is concluded that the Lias–Inferior Oolite sands have been derived from the south or south-west, notably from rocks like those of western Brittany.13. The rise of the Mendip axis was not sufficiently complete at this time to cut off the supply of sediment from the south or south-west. The deposits north and south of the ridge have the same general character.

scholarly journals Camellia

2009 ◽  
Vol 2 (1) ◽  
Author(s):  
John McClymont
Keyword(s):  
City Centre ◽  
Industrial Workers ◽  
Post Office ◽  
The South ◽  
The West ◽  
Railway Station ◽  
Retail Outlets ◽  
Duck River ◽  
Industrial Use ◽  
East West

Camellia is an industrial suburb about five kilometres east of Parramatta city centre, on the south bank of the Parramatta River. The suburb is located between Clay Cliff Creek to the west, Duck River to the east, and Grand Avenue. The major roads dissecting the suburb are Grand Avenue (east-west) and James Ruse Drive (north-south). The rail link between Rydalmere and Clyde and the spur line from it to Camellia railway station were important transport links, as were the roads that opened the suburb for industrial use. This little suburb has had no school, post office or retail outlets (other than 'a lunch shop' on Grand Avenue near Devon Street) to sustain the nearby industrial workers during the week.

scholarly journals Excavations at Theotokou, Thessaly

1907 ◽  
Vol 13 ◽  
pp. 309-327
Author(s):  
A. J. B. Wace ◽  
J. P. Droop
Keyword(s):  
Large Mass ◽  
The South ◽  
The West ◽  
South Eastern ◽  
The North ◽  
Narrow Valley ◽  
North And South

Theotokou lies at the south-eastern corner of the Magnesian peninsula, a little to the north of the bay of Kato Georgi. The site itself is the seaward end of a narrow valley, where a small brook discharges into a little cove just to the north of a hill called Kastro (Fig. 1). Here there stands a small chapel built in 1807, and dedicated to the Virgin. In the walls of the chapel itself are several ancient blocks, and north and south of it traces of walls are visible. Immediately to the west is a large mass of ruins formerly covered with brushwood; round these stand six fragments of Doric columns, and a seventh lies in a cornfield some distance to the west: an eighth, which was seen here, has disappeared. This place, the traditional site of Sepias, was first visited by a local gentleman, Theódoros Zirghános.

I 10, 10-11: Casa Degli Amanti

1997 ◽  
Author(s):  
Roger Ling ◽  
Paul Arthur ◽  
Georgia Clarke ◽  
Estelle Lazer ◽  
Lesley A. Ling ◽  
...  
Keyword(s):  
The Other ◽  
Central Axis ◽  
The South ◽  
The West ◽  
The North ◽  
Small Window ◽  
South West ◽  
Dining Room ◽  
North Wall ◽  
North And South

The casa degli amanti (house of the lovers), at the south-west corner of the insula, falls into two fairly distinct halves: the atrium complex, oriented on the street to the west, and the peristyle with its surrounding rooms, oriented on the street to the south and on the property boundary to the east. In the atrium complex, the atrium is misplaced to the south of the central axis, allowing space for two large rooms to the north, one of which was possibly a shop or workshop (5.50 m. × 4.70 m.), with a separate entry from the street (I 10, 10), while the other (5.80 m. × 4.50 m.), decorated with mythological wallpaintings and provided with a wide opening on to the peristyle, must have been a dining-room or oecus (room 8). Each of these had a segmental vault rising from a height of about 3.50 m. at the spring to slightly over 4 m. at the crown. In the first the vault is missing, but the holes for some of its timbers are visible in the east wall and a groove along the north wall marks the seating for the planking attached to them; at a higher level, in the north and south walls, are the remains of beam-holes for the joists of the upper floor or attic (see below). The arrangements in room 8 are now obscured by the modern vault constructed to provide a surface for the reassembled fragments of the ceiling-paintings; but the shape of the vault is confirmed by the surviving plaster of the lunettes, while a beam-hole for the lowest of the vault-timbers is visible above the corner of the western lunette in an early photograph (Superintendency neg. C 1944). The shop I 10, 10 had a small window high in the street wall to the south of Its entrance; whether there were any additional windows above the entrance, it is impossible to say, since this part of the wall is a modern reconstruction. Room 8 was lit by a splayed window cut in the angle of the vault and the eastern lunette, opening into the upper storey of the peristyle.

scholarly journals IX. On the fossil floras of the Wyre Forest, with special reference to the geology of the coalfield and its relationships to the neighbouring coal measure areas

1914 ◽  
Vol 204 (303-312) ◽  
pp. 363-445 ◽  
Keyword(s):  
Special Reference ◽  
Coal Measure ◽  
The South ◽  
The West ◽  
The North ◽  
Fossil Floras ◽  
Coal Measures ◽  
North And South

In the Western Midlands of England and along the Welsh Borderland a series of coalfields occurs parallel to the course of the River Severn, and, for the most part, situated to the West of that river. The main links in this chain begin in the North with the Shrewsbury coalfield. Next follows the Le Botwood area, then Coalbrookdale and the Wyre Forest. Further still to the South is the little coalfield of Newent in Gloucestershire. This line terminates in the Forest of Dean and Bristol coalfields. In addition, a few detached areas of coal measures, of which the Clee Hills are the most important, lie further to the West. To the North of Shrewsbury, the line is continued by the Denbighshire (Wrexham) and the Flintshire coalfields, both situated for the most part to the West of the Dee. There is little doubt that the coalfields lying along this line, roughly North and South, are not all related to one another, either stratigraphically or tectonically. We are concerned here with the fields beginning with the Shrewsbury and ending with the Newent areas, and more especially with that of the Wyre Forest. We may at once exclude from primary consideration the Forest of Dean and Bristol fields in the South, and the Dee Valley coalfields in the North, as being quite unrelated, at least stratigraphically, to the Wyre Forest.

Three Types of South Pacific Subtropical Mode Waters: Their Relation to the Large-Scale Circulation of the South Pacific Subtropical Gyre and Their Temporal Variability

2007 ◽  
Vol 37 (10) ◽  
pp. 2478-2490 ◽  
Author(s):  
Takamasa Tsubouchi ◽  
Toshio Suga ◽  
Kimio Hanawa
Keyword(s):  
World Ocean ◽  
South Pacific ◽  
Recirculation Region ◽  
The South ◽  
Short Term ◽  
The West ◽  
The North ◽  
Term Variation ◽  
North And South

Abstract A detailed spatial distribution of South Pacific Subtropical Mode Water (SPSTMW) and its temporal variation were investigated using the World Ocean Atlas (WOA) 2001 climatology and high-resolution expendable bathythermograph (HRX) line data. In the WOA 2001 climatology, SPSTMW can be classified into western and eastern parts. A detailed examination of spatial distributions using HRX-PX06 line data revealed that the eastern part can be further divided into two types by the Tasman Front (TF) extension. Consequently, SPSTMW can be classified into three types, referred to in the present study as the West, North, and South types. The West type, situated in the recirculation region of the East Australia Current (EAC), has a core layer temperature (CLT) of about 19.1°C; the North type, in the region north of the TF extension, has a CLT of about 17.6°C; and the South type, in the region south of the TF extension, has a CLT of about 16.0°C. The long-term (>6 yr) variations in the inventories of the three types were dissimilar to each other. The short-term (<6 yr) and long-term variations in the mean CLT of the North and South types were greater than that of the West type. Winter cooling in the previous year may have influenced the short-term variation in the South-type CLT. Moreover, the strength of the EAC may have influenced long-term variation in the West-type inventory and thickness and in the North-type thickness and CLT.

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