It is reckoned that about 20 glacier passes were certainly known before 1600, about 25 more before 1700, and yet another score before 1800; but though the attempt of P. A.
These processes are accompanied by a gradual descent down the mountain side, during which the neve suffers consolidation, until it becomes compact glacier-ice.
Near its margin the surface of the inland ice is broken up by numerous large crevasses, formed by the outward motion of the glacier covering the underlying land.
Triftlimmi (Rhone Glacier to the Gadmen Valley), snow Sustenlimmi (Stein Alp to Goeschenen), snow..
Passo della Lobbia Alta (Lobbia Glacier to the Mandron Glacier), snow..
It is almost immediately joined on the left by the Mutt torrent, coming from a small glacier to the S.E., and then flows S.W.
But the Plateau was to be reached by Shackleton's way up the Beardmore glacier at which point the tracks converged.
As the Hindu Kush strikes westwards, after first rounding the head of an Oxus tributary (the Ab-i-Panja, which Curzon considers to be the true source of the Oxus), it closely overlooks the trough of that glacier-fed stream under its northern spurs, its crest at the nearest point being separated from the river by a distance which cannot much exceed io m.
It is described as a lofty glacier-covered land, reaching an extreme elevation of about 2400 ft.
A way was found to the summit of the Plateau by the Axel Heiberg glacier which was negotiated by the dogs with much difficulty.
The lake of Thun, and those in the Upper Engadine, in the heart of the mountains, though these are naturally smaller in extent, while the true lakes of the High Alps are represented by the glacier lakes of the Marjelensee (near the Great Aletsch glacier) and those on the northern slope of the Col de Fenetre, between Aosta and the Val de Bagnes.
7,267 Grimsel Pass (Meiringen to the Rhone Glacier), carriage road 7,100 Kleine Scheidegg (Grindelwald to Lauterbrunnen), railway over.
10,112 Fuorcla del Confin (Silvretta Pass to the Vermunt Glacier), snow.
The Drygalski glacier tongue was crossed and the party made its way southward along the sea-ice close to shore.
For instance, Ryder found that the Upernivik glacier had an average velocity of only 33 ft.
Its main source is in a great glacier-mass of the northernmost chain of the Himalayas, called Kubigangri, about 82° N., and receives various tributaries including one formerly regarded as the true source from the pass of Mariam La (15,500 ft.), which separates its basin from the eastern affluents of the Mansarowar lakes, at least ioo m.
Leaving out of account the innumerable glacier streams that swell its volume above the Lake of Constance, the most important affluents to its upper course are the Wutach, the Alb and the Wiese, descending on the right from the Black Forest, and the Aar, draining several Swiss cantons on the left.
Nor is there any sign of moraines, glacier-scorings or other traces of the ice-age.
While the majority of his researches bear on one or other of the subjects just mentioned, others deal with such widely different topics as the birds of Greenland, ocean temperatures, the Gulf Stream, barometric measurement of heights, arcs of meridian, glacier transport of rocks, the volcanoes of the Hawaiian Islands, and various points of meteorology.
15 chains; the Murchison glacier is io m.
The culminating summits of the ranges generally present the appearance of a flat, rounded swelling, and when they are crowned with glaciers, as many of them are, these shape themselves into what may be described as a mantle, a breastplate, or a flat cap, from which lappets and fringes project at intervals; nowhere do there exist any of the long, narrow, winding glacier tongues which are so characteristic of the Alps of Europe.
High, a sheer, plain mass of granite; the Three Brothers, North Dome, Glacier Point, the Sentinel, Cathedral, Sentinel Dome and Cloud's Rest, from 2800 to nearly 6000 ft.
But his inquiries into glacier motion were notable alike for his association with Switzerland and for prolonged controversy with other men of science on the subject.
It is unnecessary here to rake among the ashes of this prolonged dispute, but it may be noted that Helmholtz, who, in his lecture on "Ice and Glaciers," adopted Thomson's theory, afterwards added in an appendix that he had come to the conclusion that Tyndall had "assigned the essential and principal cause of glacier motion in referring it to fracture and regelation" (1865).
The present course of the Upper Allegheny river is the result of the glacier which blocked the northward drainage of the region through which it flows and turned it southward.
In the Eastern Alps the longest glacier is the Pasterze (rather over 64 m.), which is not near the true main watershed, though it clings to the slope of the Greater Tauern range, east of the Dreiherrenspitze.
10,762 Fenetre de Saleinaz (Saleinaz Glacier to Trient Glacier),snow 10,709 Col de Tracuit (Zinal to Turtmann), snow.
8,393 Furka Pass (Rhone Glacier to Andermatt), carriage road.
It is doubtful whether the convergent action of the streams has been the sole agency in the erosion of these striking cavities, or whether snow and glacier-ice have had a share in the work.
On Dec. 21 1911 and left the Upper Glacier depot in lat.
Surface, and is gradually converted into glacier-ice, which descends by a slow secular motion into the deeper valleys, where it goes to swell perennial streams. As on a mountain the snow does not lie in beds of uniform thickness, and some parts are more exposed to the sun and warm winds than others, we commonly find beds of snow alternating with exposed slopes covered with brilliant vegetation; and to the observer near at hand there is no appearance in the least corresponding to the term limit of perpetual snow, though the case is otherwise when a high mountain-chain is viewed from a distance.