138 ICE OF NORTHERN HEMISPHERE 



1501. Pettersson, Otto. 



1904-1907. On the influence of ice-melting upon oceanic circulation. 

 Geogr. j. 24:285-333. 1904. 30:273-303, 671-675. 1907. 

 Skr. Svensk. hydrogr.-biol. komm. 2(8). 16 p. 1905. 



1502. Pettersson, Otto. 



1503. 



1504. 



1505. 



1506. 



1507. 



1508. 



1509. 



1510. 



1511. 



1910. 



Pfaff, Fr. 

 1875. 



Pinegin, N. V. 

 1924. 



De I'influence de la fusion de la glace sur la circulation oc6an- 

 ique. Rev. marit. 186:513-535. [Transl. of his article in 

 Geogr. j. 1907.] 



Versuche uber die plastizitat des eises. 

 169-174. 



Ann. phys. 155: 



Piotrovich, V. 

 1933. 



Pobedonosfsev. 

 1936. 



Predvaritel'noe soobshchenie ob issledovanii prochnosti rech- 

 nogo I'da v sviazi s temper aturnymi izmeneniiami. (Pre- 

 liminary communication on research of strength of river ice 

 in relation to temperature differences.) Soobshch. nauch.- 

 tekhn. rab. v. resp. 12:12-14. 



V. 



Sposob opredeleniia poristosti i kolochestva ledianykh mass v 

 rechnykh zazhorakh. (Means of determination of porosity 

 and quantity of ice which accumulates on rivers.) Izv. Gos. 

 gidrol. inst. 59:27-30. 



B. D. 



sposobakh izmereniia shugi. (Methods of sludge measure- 

 ments.) Met. i gidrol. 1936(8) :19-34. [Variations of 

 "shugi"': Ice crystals formed at river mouths from open 

 water surface, with running water current (ordinary shugi). 

 Floating bottom ice. Frozen sheets of surface origin, partly 

 destroyed lumps of frozen bottom ice, and crushed remnants 

 of ice and snow.] 



Pogachev, I. M. 



1939 . K voprosu o prokhodimosti I'dov dlia sudov. (On the question 



of ice navigation by ships.) Severnja morskoi put'. 11: 

 52-55. [Tables of state of ice (bala) and loss of speed of 

 motion by ships.] 



Priestley, R. E. 



1922. Sea ice definitions. (In: C. S. Wright and R. E. Priestley. 



Glaciology. Sci. rep. British (Terra Nova) Antarctic expe- 

 dition, 1910-1913. London, pp. 393-394.) 



Rastaplivanie poliarnykh I'dov. (Melting of polar ice.) Vestnik znaniia. 

 1934. 1934(11) :766. [On sailing conditions in Polar ice and on 



the use of thermite or ammonal for battling the ice.] 



Repa, A. 

 1937. 



G. 



Reusch, E. 

 1880. 



Freezing out of sea water on a free ice surface. (In Russian.) 

 Vestn. Dalnevost. fil. Akad. nauk. 25:59-74. 



Elastizitatmodul des eises. Ann. phys. 9:329-334. 



