Harald Ulrik Sverdrup: Encyclopedia Arctica 15: Biographies
Harald Ulrik Sverdrup
SVERDRUP; DOCTOR HARALD U(LRIK). (1888 - )
SVERDRUP; DOCTOR HARALD U(LRIK) - Continued.
SVERDRUP - DOCTOR HARALD U(LRIK) - Continued
marine Expedition on the NAUTILUS as Chief Scientist. The summer of 1934 was spent on the high altitude snow fields of Spit z ^ s ^ bergen. In the spring of 1936 Sverdrup was invited to become Director of the Scripps Institution of Oceano– graphy (La Jolla, California) and Professor of Oceanography in the University of California. He accepted this position and assumed his new duties on 1 September 1936. Sverdrup was on leave from the Chr. Michelsen Institute in– tending to return to Norway after only a few years. However, the outbreak of World War II made this impossible and he stayed in California until February 29, 1948 when he returned to Norway to assume the Directorship of the Norwegian Polar Institute (Oslo).SVERDRUP; DOCTOR HARALD U(LRIK) - Continued
he aroused international enthusiasm and respect. As far as the development of our understanding of the Arctic is concerned, it is unfortunate that cir– cumstances took him in the mid-1930's into other fields and that he was unable to train others in this field of endeavor. His return to Norway in 1948 placed him in a position where he once more exercised an international influence upon the scientific study of the high latitudes. Although small and wiry, his excellent physical stamina is well-known to those who have tried to keep pace with him. No less arduous is the pace he set in his work. Probably in no small part due to the mental discipline he evolved during his years on the MAUD, Sverdrup is capable of a prodigious amount of work. His lengthy list of scientific publications, however, represent only a part of his activities. His administrative responsibilities, his teaching, his numer– ous friends, and his many social and civic activities have all found a full place in his life. His association with Bjerknes, Nansen, Amundsen and Helland– Hansen has been reflected in his life and wide interests. Sverdrup has always shown a great sense of social responsibility and hope for international goodwill and understanding.SVERDRUP; DOCTOR HARALD U(LRIK) - Continued
Society, the Deutsche Meteorologische Gesellsch ^ af ^ t, Geographical Societies of Oslo, Hamburg, Leipzig and in the New York Academy of Science. He is a corresponding member of the American Geographical Society, the State Russian Geographical Society (Leningrad), Geographical Societies of Copenhagen and Stockholm and the California Academy of Sciences. Sverdrup is also a Fellow or Member of the following organizations: American Geophysical Union (Presi– dent of the Section on Oceanography, 1944-47 and vice-president of the Union, 1947- --); American Meteorological Society; American Association for the Advancement of Science (President, Pacific Division, 1940-41); San Diego Society of Natural History (President of Fellows, 1938-39); Oceanographic Society of the Pacific (President 1939-40); International Association of Oceanography (President 1946- --); International Meteorological Organization (President of the International Commission on Polar Meteorology, 1947 - --); Deutsche Geophysische Gesellschaft; Norway Geophysical Association.SVERDRUP - DOCTOR HARALD U(LRIK) - Continued
was spent off the northern coast of Cape Chelyuskin. Besides systematic ob– servations of upper air conditions, tides and magnetic conditions, Sverdrup, among others of the party, made several sledge trips to explore the Taimy ^ r ^ and Peninsula which is the most northerly of continental land masses. On these and later sledge journeys systematic astronomical observations were made, as well as magnetic and meteorological records.SVERDRUP; DOCTOR HARALD U(LRIK) - Continued
and imperturbable nature.SVERDRUP; DOCTOR HARALD U(LRIK) - Continued
surface meteorological data and valuable upper air observations, using kites and balloons, were procured. A few oceanographic observations were made, including tides, and biological and geological collections assembled from the Taimyr Peninsula and Ayon Island.SVERDRUP; DOCTOR HARALD U(LRIK) - Continued
landed with their plane with which they intended to attempt to fly across the Polar Basin. Ice conditions kept the MAUD in Kotzebue Sound for three weeks and then Amundsen, Omdahl and their equipment were transferred to another ship. Finally, on 28 July, the MAUD left Pt. Hope to undertake the primary objective of the expedition. Although the pack was heavy the MAUD was able to proceed as far as Herald Island before she was beset. For one year follow– ing, the MAUD drifted with the ice towards the westnorthwest following a zig– zag course dependent largely upon the wind. In September 1923, the MAUD was to the east of ^ the ^ De Long 's Islands and hopes were high that she would follow a course towards Spit z ^ s ^ bergen that would be to the north of the track of the FRAM. However, strong northerly winds set in that drove them about 100 miles to the south and the winter of 1923-24 was spent drifting back and forth in latitude 75° to the south of ^ the ^ De Long 's Islands. In February 1944, word was received from Amundsen that the MAUD should attempt to free herself from the ice and return via Bering Strait to the United States. However, during the spring and summer of 1924 the ice carried the MAUD between ^ the ^ De Long 's Islands and the New Siberian Islands but by 9 August she was free. An attempt was made to pass to the east of the New Siberian Islands but the ice was too heavy and finally she proceeded to the west of them and on 20 August transited Laptew ^ v ^ Strait. Ice again stopped the MAUD and she was forced to winter off the mouth of the Kolima River just to the east of Four Pillar Island. Late in July the ice broke up and the MAUD proceeded to Seattle via Nome, arriving on 5 October 1925.SVERDRUP; DOCTOR HARALD U(LRIK) - Continued
observations from other fields of geophysics". The general scope of the pro– gram had remained the same but the wealth of data obtained during the second phase of the expedition was amaxing. Sverdrup, Malmgen and Dahl had devised many new recording instruments to meet the needs of Arctic operations. Among them were a recording device for atmospheric potential, a recording "wet bulb", and an automatic means for recording hoar frost. A special current meter was designed and built and the routine measurements were made in virtu– ally all phases of the geophysical sciences. Experience brought a more sophis– ticated approach to many problems. The program [: was ] integrated and great strides were made in explaining and evaluating the processes controlling the conditions in the atmosphere, snow, ice and water. A few of the notable scientific contributions are outlined below.SVERDRUP: DOCTOR HARALD U(LRIK) - Continued
of –40°C. ^ , ^ T ^ t ^ his representing the balance established between the back radia– tion to space and the conduction of heat through the ice from the water. As in all his work, this analysis represents a fine blend of observation, imagina– tion and theory. These two workers also established the heat budget for the ice, showing that approximately 120 cm. of polar pack are melted each summer and that under equilibrium conditions when the ice remains of uniform thickness, the same amount must form each winter. This process throws doubt on the idea of "paleocrystic" ice of many years age. As the ice is renewed from the bottom and melted away from the surface, this process accounts for the sedimentary debris sometimes found on or near the ice surface in summer. Unfortunately, the MAUD never operated in deep water so that Sverdrup was unable to add anything to the material collected by the FRAM. However, his analysis of the oceanographic data from the North Siberian Shelf is a masterly undertaking going far beyond the routine presentation of data. The effects of summer runoff, formation, movement and melting of the ice, and mixing due to the tidal currents are all carefully integrated. The wide scope of his scientific training, as well as Sverdrup's own abilities, are revealed in the scientific reports of the expedition through the frequent cross references and the use of data and theories from a variety of sciences to help develop a dynamic picture of Arctic conditions. It is indeed for tunate that Sverdrup was able to act as editor for all of the MAUD reports to which he contributed such a large share. (7 [: ] , 10, 11, 12, 13, 20, 21, 22).SVERDRUP: DOCTOR HARALD U(LRIK) - Continued
his attention to other matters. For about six months he visited Washington, D. C. to work at the Carnegie Institution on the physical oceanographic data collected by the non-magnetic vessel CARNEGIE on her last cruise (1928-29). (15, 36). This was his first opportunity to deal with deep water problems. He was able to show for the first time a logical explanation for the origin of the deep water of the Pacific Ocean, namely, that it was a mixture of Atlantic and Indian Ocean waters formed in the Antarctic. This lead ^ led ^ to an interest in the Antarctic which made it logical for him to analyze and des [: ] ribe certain oceanographic results of the Discovery Committee (24) and the BANZ Antarctic Research Expedition (32). In 1931, Sverdrup participated in the discussion of the observations of the ill-fated Andrèe expedition (16) and during the same year he acted as chief scientist for the Wilkins-Ellsworth North Polar Submarine Expedition on the NAUTILUS (18, 23). Once more, despite the failure to accomplish the primary mission of crossing the Polar Basin, Sverdrup was able to make notable contributions to the bathymetry and oceano– graphy of the waters to the north of Spit z ^ s ^ bergen. This operation, besides being the first time a submarine had been employed in the Arctic, was also unique for establishing a record of reaching 82° North before being stopped by the ice and also bec ua ^ au ^ se it was the first time that oceanography had been carried ^ on ^ under water. A special diving chamber had been installed on the ^ on ^ NAUTILUS that could be closed off and the internal pressure increased so that when a hatch in the bottom of the submarine was opened no water entered the compartment. Through the hatch, instruments could be lowered on wire from a winch in the compartment. Sverdrup often commented on the convenience and comfort of this arrangement where "one could work in a closed room, protectedSVERDRUP: DOCTOR HARALD U(LRIK) - Continued
against wind and weather", instead of on the open pack or wind-swept deck of the MAUD.SVERDRUP: DOCTOR HARALD U(LRIK) - Continued
time the previously unrelated information about the distribution of properties and currents in the ocean. Throughout the volume there is evidence of Sverd– rup's basic philosophy of the importance of studying natural phenomena and of the coherence of all the manifold aspects of the oceans. This volume served as a starting point for much of his research and training of personnel during the years of World War II. The need for methods for forecasting sea and swell conditions in the open sea and for surf on exposed beaches le a d Sverdrup into a complete re-analysis of this field of knowledge. Even under the pressure for immediate results he never swerved from a sound scientific approach. Later, when his work could be published ^ , ^ it required but minor revisions to meet his exacting standards for a scientific publication (37). The research and instruction of military personnel during the period 1942-1945 produced a great revival of interest in oceanography in the United States. This, in one aspect, was shown by the much greater number of graduate students under his instruction during the years immediately following World War II. Despite his ever-increasing administrative and teaching responsibilities, Sverdrup con– tinued to produce original research, including a general theory concerning the interaction of the winds and ocean in maintaining the Equatorial Current System (38). In the summer of 1946 Sverdrup visited Norway and was offered the directorship of the proposed Norsk e Polarinstit tu ^ ut ^ t. This he accepted only after stipulating that he be allowed to remain in California long enough to complete his committments to the University of California. He has said "one of the reasons for accepting this job is that I shall return to Arctic work, in which I have spent so many years of my life, at a time when interna-SVERDRUP; DOCTOR HARALD U(LRIK) - Continued.
tional work in the Polar regions is more important than ever".1. Der nordatlantische Passat. Geophys. Inst., Leipzig, Veröff., Ser. 2, v. 2, no. 1, 94 pp., 19 tables, 1917.
2. Customs of the Chukchi natives of northeastern Siberia. Wash. Acad. Sci., Jour., v. 12, pp. 208-212, 1922.
3. Scientific work of the MAUD Expedition, 1922-1925. Scientific Monthly, v. 22, pp. 400-410, 1926.
4. The tides on the North Siberian shelf: Their bearing on the existence of land in the Arctic Sea, and their dynamics. Wash. Acad. Sci., Jour., v. 16, pp. 529-540, 1926.
5. Tre ar i isen med "Maud". Gyldendal, Oslo, 285 pp., 1926.
6. Dynamics of tides on the North-Siberian Shelf. Geofysiske Publikasjoner, v. 4, no. 5. 75 pp., 1927.
7. Magnetic, atmospheric-electric, and auroral results, MAUD expedition, 1928-1925. Carnegie Inst. Washington, Pubn. no. 175. pp. 309-524, 1927. (Also in MAUD, Scientific Results, v. lb.)
8. Die Eistrift im Weddelmeer. Annalen d. Hydrogr. u. Marit. Meteorologie, pp. 265-274, 1928.
9. Die Renntier-Tachuktschen. Geograph. Gesellschaft in Hamburg, Mitteil., Bd. 39, pp.87-135, 1928.
10. Results of astronomical observations. Norwegian North Polar Exped. with the "Maud" 1918-^2^ 5, Scientific Results, v. 1, no. 3, 24 pp., 1928. Hereafter referred to as MAUD, Scientific Results .
11. The wind-drift of the ice on the North-Siberian Shelf. MAUD, Scientific Results, v. 4, no. 1, 46 pp., 1928.
12. The waters on the North-Siberian Shelf. MAUD, Scientific Results, v. 4, no. 2, 131 [: ] 75 pp., 1929.
13. Meteorology, part 2, Tables. MAUD, Scientific Results, v. 3, 527 pp., 1930.
14. Diurnal variation of temperature at polar stations in the spring. Gerlands Beiträ ge zur Geophysik, v. 32, pp. 1-14, (Köppen-Band I), 1931.
15. The origin of the deep-water of the Pacific Ocean as indicated by the oceanographic work of the CARNEGIE. Gerlands Beiträge zur Geophysik, v. 29, pp. 95-105,1931.
16. Scientific resultsof the Andree-Expedition. I. Drift-ice and ice-drift. Geografiska Annaler, H. 2/3, pp. 121-140, 1931.
17. Das Tier-und Vogelleben im Treibeis. Petermanns Geographischen Mitteilungen, Heft 1/2, pp. 13-16, 1931.18. Hvorledes og hvorfor med "Nautilus". Gylendal, Oslo. 183 pp., 1931.
19. Wärmeaushalt und Austauschgrösse auf Grund der Beobachtungen der "Maud"– Expedition. Beiträge z. Physik d. freien Atmosphäre. (Bjerknes-Festschrift), v. 19. pp. 276-290, 1932.
20. General report of the expedition. MAUD, Scientific Results, v. 1, no. 1, 22 pp., 1933.
21. Pendulum observations near Cape Chelyuskin. MAUD, Scientific Results, v. la. no. 8. 9 pp., 1933.
22. Meteorology, part 1, Discussion. MAUD, Scientific Results, v. 2, 331 pp. 1933.
23. Narrative and oceanography of the Nautilus expedition, 1931. Papers in Physical Oceanogr. and Meteorology (Mass. Inst. Tech. and Woods Hole Oceanogr. Inst.), v. 2, no. 1, 63 pp., 1933.
24. On vertical circulation in the ocean due to the action of the wind with application to conditions within the Antarctic circumpolar current. Discovery Reports, v. 7, pp. 139-170, 1933.
25. The temperature of the firn o ^ n ^ Isachsen's Plateau, and general conclu– sions regarding the temperature of the glaciers on West Spitzbergen. Part III of the scientific results of the Norwegian-Swedish Spitzbergen Expedition in 1934. Geografiska Annaler, H.1/2, PP. 53-88, 1935.
26. The ablation on Isachsen's Plateau, and on the Fourteenth of July Glacier in relation to radiation and meteorological conditions. Part IV of the scientific results of the Norwegian-Swedish Spitzbergen Expedition in 1934. Geografiska Annaler, H. 3/4, pp. 145-166, 1935.
27. [: ] bersicht [: ] das Klima des Polarmeeres und des Kanadischen Archipels. Handbuch der Klimatologie Herausgegeben von Köppen und Geiger, Band II, Teil K, 30 pp., 1935.
28. The eddy conductivity of the air over a smooth snow field. Geofysiske Publikasjoner, v. 11, no. 7, 69 pp., 1936.
29. Results of the meteorological observations on Isachsen's Plateau. Part VI of the scientific results of the Norwegian-Swedish Expedition in 1934. Geografiska Annaler, Heft 1/2, 34-47 pp. 1936.
30. Notes on erosion by drifting snow and transport of solid material by sea ice. Amer. Jour. Science, v. 35, pp. 370-373, 1938.
31. Hos Tundra-Folket, Gyldendal, Oslo, 175 pp., 1938.
32. Hydrology, Section II, Discussion, British Australian New Zealand Antarctic Research Expedition, 1921-31, Reports, Ser. A, v. 3, Oceanography, pp. 88– 126, 1940.33. The Arctic regions. Assoc. Oceanogr. Physique, Publ. Scientifique, no. 8, pp. 50-53, 1940.
34. Oceanography for meteorologists. New York, Prentice-Hall. 250 pp., 1942.
35. (H.U.S., M. W.Johnson and R.H. Fleming) The Oceans: Their physics, chemistry, and general biology. New York, Prentice-Hall. 1087 pp., 1942.
36. (H.U.S. et al ) Observations and results in physical oceanography. Scientific Results of Cruise VII of the Carnegie during 1928-1929. Oceanography, I-A, 156 pp., 1944.
37. (H.U.S. and W.H.Munk) Wind waves and swell: Theory of relations for fore– casting. Pub. 601 of the U.S.Hydrographic Office, Washington. 44 pp. 1947.
38. Wind-driven currents in a baroclinic ocean; with application to the equa– torial currents of the eastern Pacific. Nat. Acad. Sci., Proc., v. 33, pp. 318-36, 1947.
39. (H.U.S. and R.H.Fleming) Atlantic Ocean. Encyclopaedia Britannica, 5 pp., 1947. (Includes Arctic Ocean).