scholarly journals FIELD SURVEY OF 2018 KRAKATAU TSUNAMI

Author(s):  
Miguel Esteban ◽  
Hendra AchiariTomoyuki Takabatake ◽  
Ryota Nakamura ◽  
Takahito Mikami ◽  
Satriyo Panalaran ◽  
...  

At 21:30 local time (UTC+7h) on the 22nd of December 2018 the shorelines of the Sunda Strait, Indonesia, were flooded by tsunami waves. As a result there was widespread destruction and there were 437 casualties, 31,943 injuries, 10 still missing and over 16,000 people displaced (as of the 14th January 2019 National Disaster Management Agency (BNBP), 2019). The tsunami was caused by the flank collapse of the Anak Krakatau volcano (Robertson et al. 2018), located roughly at the centre of the Sunda Strait, which separates eastern Sumatra and western Java islands. Takabatake et al. (2019) performed a field survey of the affected areas. The survey results showed that inundation heights were more than 4 m high along the coastline of Sumatra island (situated to the north-north-east of Anak Krakatau), while less than 4 m were measured along the north-western direction. In Java island Inundation heights of over 10 m were measured at Cipenyu Beach (south-south-eastern direction from Anak Krakatau). However, at the time it was not possible to survey the actual vicinity of Anak Krakatau.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/d6hOT352fj4

1920 ◽  
Vol 57 (11) ◽  
pp. 500-503 ◽  
Author(s):  
J. W. Gregory ◽  
Ethel Currie

THE Geological Department of Glasgow University has recently received from Dr. W. R. Smellie and Mr. J. V. Harrison some fossils collected by them which throw further light on the age of the limestones of the Persian arc at the north-western end of Luristan, about 100 miles north-east of Baghdad. The locality, Gilan, is on a tributary of the Diala, about 30 miles south-east of Kasr-i-Shirin, a well-known station on the main road from Baghdad to Teheran. The geology of this part of the Persian frontier has been investigated by J. de Morgan (Miss. Sci. Perse, vol. iii, pt. i, Étud. Géol., 1905, pp. 71–112), who has given a geological map (ibid., pl. xix) of an area about 60 miles south-east of Gilan. De Morgan has identified there a folded series of Cretaceous and Eocene limestones, with lacustrine and gypsiferous Miocene beds. The locality at which the fossils were collected by Messrs. Smellie and Harrison is in line with the strike of the rocks in the area of de Morgan's map.


Author(s):  
A.Yu. Ozerov ◽  
◽  
O.A. Girina, ◽  
D.V. Melnikov, ◽  
I.A. Nuzhdaev ◽  
...  

February 18, 2021, a flank eruption started on the north-western slope of the Klyuchevskoy Volcano (Kamchatka, Russia). Cinder cone was formed at the altitude of 2 850 m above sea level, from which a lava flow was spreading north-west. Having moved 1.2 km downslope, the lava flow entered the Ehrmann Glacier, which resulted in the formation of huge mud-stone flows. The latter made their way further north-east along the Kruten’kaya River bed and reached the length of about 30 km. The eruption brought onto the surface high-aluminous basaltic andesites typical of the Klyuchevskoy Volcano. By March 21, the flank eruption ended. It has been named after G.S. Gorshkov, associate member of USSR Academy of Science, famous Russian volcanologist.


2019 ◽  
Vol 19 (12) ◽  
pp. 2781-2794 ◽  
Author(s):  
Wahyu Widiyanto ◽  
Purwanto B. Santoso ◽  
Shih-Chun Hsiao ◽  
Rudy T. Imananta

Abstract. An earthquake with a magnitude of Mw=7.5 that occurred in Sulawesi, Indonesia, on 28 September 2018 triggered liquefaction and tsunamis that caused severe damage and many casualties. This paper reports the results of a post-tsunami field survey conducted by a team with members from Indonesia and Taiwan that began 13 d after the earthquake. The main purpose of this survey was to measure the run-up of tsunami waves and inundation and observe the damage caused by the tsunami. Measurements were made in 18 selected sites, most in Palu Bay. The survey results show that the run-up height and inundation distance reached 10.7 m in Tondo and 488 m in Layana. Inundation depths of 2 to 4 m were common at most sites and the highest was 8.4 m in Taipa. The arrival times of the tsunami waves were quite short and different for each site, typically about 3–8 min from the time of the main earthquake event. This study also describes the damage to buildings and infrastructure and coastal landslides.


1998 ◽  
Vol 93 ◽  
pp. 463-511 ◽  
Author(s):  
A. G. Poulter

A programme, combining a physical survey, intensive pick-up and geophysics, was carried out over 17 ha around the site of a small late Roman fortification, some 6 km south of ancient Pydna. Although the area is intensively farmed, the pick-up survey proved remarkably successful. Hellenistic occupation was identified and a restricted Roman settlement around the site of the quadriburgium. Surprisingly, a new and large late Roman fortification (c. 3–4 ha), equipped with towers, with a densely occupied interior and ‘extramural’ buildings was also found. The north-eastern curtain was discovered by resistivity surveying, the line of the north-western and south-western sides by intensive survey. Pottery and brick monograms from the new site suggests that it dates to the second half of the sixth or possibly early seventh century. It is argued that the quadriburgium may be the site of ancient Anamon, a station on the coastal road from Thessaloniki to Dion. The newly discovered site, clearly of considerable importance, lay on the north bank of the river Sourvala and probably had direct access to the sea, importing both local pottery and amphorae from the eastern Aegean. Its role may have been to protect the fertile coastline of the Pieria and to provide a secure base for the export of agricultural products to the beleaguered cities and settlements around the Thermaic Gulf.


Zootaxa ◽  
2019 ◽  
Vol 4623 (2) ◽  
pp. 396-400
Author(s):  
ANTON V. VOLYNKIN ◽  
AIDAS SALDAITIS

The arctiine genus Alphaea Walker, 1855 is distributed in North and North East India, Nepal, southern China and northern Indochina. The genus was recently reviewed by Dubatolov & Kishida (2005). It is subdivided into three subgenera, Alphaea, Flavalphaea Dubatolov & Kishida, 2005 and Nayaca Moore, 1979 and includes 10 valid species. During a lepidopterological expedition to the north-western part of China’s Yunnan Province in May of 2018, an undetermined species of Alphaea was collected. The Chinese specimens have the wing pattern very similar to that of A. (Flavalphaea) khasiana (Rothschild, 1910), but red and black abdomen (that is orange and black in A. khasiana). 


1957 ◽  
Vol 25 ◽  
pp. 67-203 ◽  
Author(s):  
M. W. Frederiksen ◽  
J. B. Ward Perkins

The modern Via Cassia, now as in antiquity the great arterial road up through the heart of south-eastern Etruria, after crossing the Fosso dell'Olgiata less than a kilometre to the west of the north-western gate of Veii, climbs steadily for about 7 km. to cross the Monti Sabatini, the line of extinct volcanic craters that runs eastwards from Lake Bracciano, forming a natural northern boundary to the Roman Campagna. After cutting through the southern crest of the crater of Baccano, with its magnificent views southwards and eastwards over Rome towards Tivoli, Palestrina and the Alban Hills, the road drops into the crater, skirts round the east side of the former lake, and climbs again to the far rim, before dropping once more into the head of the Treia basin, on its way to Monterosi and Sutri.From this vantage-point a whole new landscape is spread out before one (pl. XLVII). To the west and north-west, the tangle of volcanic hills that forms the northern limit of the Monti Sabatini, rising at its highest point to the conical peak of Monte Rocca Romana (612 m.); beyond and to the right of those, past Monterosi and filling the whole of the north-western horizon, some 10–15 km. distant, the spreading bulk of Monte Cimino (1053 m.), with its characteristically volcanic, twin-peaked profile; to the north and north-east, the gently rolling woods and fields of the Faliscan plain, deceptively smooth, stretching away to the distant Tiber.


Author(s):  
Mike Searle

After seven summer field seasons working in the north-western Himalaya in India, I had heard of a winter trade route that must rank as one of the most outlandish journeys in the Himalaya. The largely Buddhist Kingdoms of Ladakh and Zanskar are high, arid, mountainous lands to the north of the Greater Himalayan Range and in the rain shadow of the summer monsoon. Whereas the southern slopes of the Himalaya range from dense sub-tropical jungles and bamboo forests to rhododendron woods and magnificent alpine pastures carpeted in spring flowers, the barren icy lands to the north are the realm of the snow leopard, the yak, and the golden eagles and lammergeier vultures that soar overhead. The Zanskar Valley lies immediately north-east of the 6–7,000-metre-high peaks of the Himalayan crest and has about thirty permanent settlements, including about ten Buddhist monasteries. I had seen the Zanskar Ranges from the summit of White Sail in Kulu and later spent four summer seasons mapping the geology along the main trekking routes. In summer, trekking routes cross the Himalaya westwards to Kashmir, southwards to Himachal Pradesh, and northwards to Leh, the ancient capital of Ladakh. Winter snows close the Zanskar Valley from the outside world for up to six months a year when temperatures plummet to minus 38oC. Central Zanskar is a large blank on the map, virtually inaccessible, with steepsided jagged limestone mountains and deep canyons. The Zanskar River carves a fantastic gorge through this mountain range and for only a few weeks in the middle of winter the river freezes. The Chaddur, the walk along the frozen Zanskar River, takes about ten to twelve days from Zanskar to the Indus Valley and, in winter time, was the only way in or out before the road to Kargil was constructed. I mentioned this winter trek to Ben Stephenson during our summer fieldwork in Kishtwar and he stopped suddenly, turned around, and said ‘Mike we just have to do this trek!’ So the idea of a winter journey into Zanskar was born, and four of us set off from Oxford in January 1995.


1941 ◽  
Vol 60 (1) ◽  
pp. 171-193 ◽  
Author(s):  
Douglas A. Allan

The author (1928) of the present communication has already published the results of a field survey of the Lower Old Red Sandstone in Perthshire and Angus, which were linked with those derived by Campbell (1913) from his study of similar and older series of beds in Kincardineshire, to the north-east. For thirty-five miles to the south-west of the R. Tay, no detailed investigation of the sequence or tectonics of the rocks immediately adjacent to the Highland Boundary Fault, separating the Grampians proper from the Central Valley of Scotland, has been undertaken. A comprehensive account of the rocks of this belt in the region around Aberfoyle is available in the paper by Campbell and Jehu (1917).


1963 ◽  
Vol 100 (3) ◽  
pp. 193-204 ◽  
Author(s):  
B. E. Leake ◽  
P. J. Leggo

AbstractContrary to a previously published view, evidence is given to show that the Galway Granite is entirely later than both the quartzandesine migmatization and the potash-felspar migmatization in Connemara, and that the Oughterard Granite is probably earlier than the Galway Granite, not later. There is also strong evidence against regarding the foliated marginal granite of the north and north-east border of the Galway Granite as being different in origin from the marginal granite often found in the southern, western, and north-western borders. These results agree with the radio-chemical date of 365 m.y. determined for part of the Galway Granite.


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