158 ICE OF NORTHERN HEMISPHERE 



Item 



Melting of ice 237, 



570, 581, 589, 1120, 1310, 1330, 1331, 1332, 1334, 1351, 1366, 1368, 1369, 1384, 1400, 

 1408, 1416, 1417, 1420, 1437, 1438, 1501, 1519, 1600, 1619, 1628, 1632, 1633 

 Meteorological observations 



Arctic Ocean 23, 



53, 87, 123, 153 



Baffin Bay - 644 



Barents Sea 337, 368, 483 



Bolshoy Liakhovskiy Ostrova 554 



Chukchi Sea 583 



Hudson's Bay 679 



Kara Sea 483 



North Polar Basin 636 



Prince Regent Inlet 644 



Mjcrothermograph 1330, 1331, 1337 



Navigation, Ice 67,68, 172, 



197, 1341, 1344, 1347, 1349, 1379, 1414, 1415, 1445, 1457, 1507, 1509, 1528, 1688, 1699 



Optical and radiational properties 1339, 



1360, 1449, 1600, 1628, 1646, 1647, 1648, 1664, 1665, 1666, 1689 



Color 589, 1337, 1550 



Pack ice (Field ice) 169, 228, 272, 317 



Pancake ice 1638 



Periodicity of ice cover 1370, 1433 



Plankton, see Biology of ice. 



Polynyas.-.. - 82, 1395 



Port constructions, Action by ice 1459, 1527 



Porosity, see Density and porosity of ice. 

 Regelation, see under Formation of ice. 



Research programs - 1596 



River ice (For occurrence, see names of rivers and coimtries; see also Forecasting ice. Formation 



of ice. Strength of ice. Water levels in rivers.) - 1008, 



1049, 1051, 1066, 1103, 1152, 1191, 1224, 1270, 1382, 1383, 1393, 1409, 1422, 1430, 1431, 

 1447, 1481, 1496, 1497, 1505, 1521, 1539, 1568, 1569, 1616, 1650 



Geological work of 1017, 1118 



Hydraulics 1346, 1571, 1655 



Melting 1008, 1408 



Research methods 1352, 1356 



Salinity of sea water in relation to ice 472 



Salinity of ice 335, 



455, 533, 1329, 1369, 1426, 1460, 1472, 1510, 1512, 1526, 1606, 1615, 1618, 1624, 1628 

 Siggeis, see Frazil ice. 



Sludge-ice (TeUereis; Shugi) .- 1311, 1506 



SoUdity of ice, see Density and porosity of ice. 



Steam borer 1610 



Strength of ice, see also Airplanes landing on ice; Crossing on ice - -. 336, 



455, 462, 475, 732, 737, 875, 1360, 1365, 1403, 1441, 1457, 1472, 1491, 1574, 1594, 1600, 

 1603, 1611, 1624, 1628, 1634 



Bending 475, 1473, 1486, 1591, 1592, 1593 



Crushing 222,475, 1335,1343, 1470, 1486, 1513, 1588, 1593 



Drift ice _.. 1349 



Methods - I486, 1591 



River ice 1034, 1137, 1188, 1295, 1365, 1449, 1452, 1504, 1592, 1642 



Tensile strength 475, 1329, 1343, 1398, 1513, 1588, 1593 



Twisting.. 1593 



