Arctic Ice Islands

Contains an account of the discovery of two groups of "ice islands" evidently originating on the north coast of Ellesmere Island. Their size, shape and surface structure, as well as tracking the drift of the large ice islands by planes and radar, are discussed by Major Koenig (from U.S.A.F. "Ptarmigan" and other flights), and by Squadron-Leader Greenaway (from Canadian flights and air photographs). Extensive documentation is presented (by Miss Dunbar) of 19th-20th century explorers' references to, and observations of such "islands". The probability of their origin from shelf ice and the character of the ice shelf of Northern Ellesmere is presented (by Mr. Hattersley-Smith). Special consideration is given to three very large islands (identified as T1 T2 T3), their discovery, positions and movement, description, seasonal changes, etc.; with additional data on smaller "islands," arranged according to the areas of their presence. From the air the "floating islands" are easily distinguishable from pack ice by their large size, homogenous appearance, very regular, characteristically patterned surface, and a fixed shape suggesting great thickness and hardness. Bibliography (about 40 items)

The importance of the regional/local dimension of sustainable development: an illustrative computable general equilibrium analysis of the Jersey economy

This paper uses a multi-period economic-environmental Computable General Equilibrium (CGE) modelling framework to analyse local sustainability policy issues. Our focus is the small, open, labour-constrained regional economy of Jersey. The case of Jersey is of particular interest for two main reasons. The first is the unusually low degree of geographical labour market integration for such a small regional economy. This motivates our treatment of labour as a region-specific factor of production. The second is the availability of high quality, Jersey-specific economic-enviromental data. We employ CGE model simulations to track the impact of changes in population on a number of energy-consumption and pollution indicators in a recursive dynamic framework under alternative hypotheses regarding economic conditions over the time period under consideration. In the case of Jersey, we find that household consumption is the key factor governing the environmental impact of economic disturbances. Therefore the analysis includes an examination of the sensitivity of the simulation results to different assumptions affecting the wage elasticities of labour demand and supply, and the speed of adjustment to equilibrium on the responsiveness of household income to shifts in labour supply