freshets 

 gene pool 



geomorphic 



geosyncline 



Gimv 



groin or jetty 



A rise and flood of a stream as a result of rain or melting snow. 

 The genetic material possessed by a local interbreeding popula- 

 tion. 



Of, or relating to, the form of the earth; topographic features 

 carved by erosion of the substrate and buildup from erosional 

 debris. 



A part of the crust of the earth that sank deeply through time. 

 Gulf Intracoastal Waterway. 



A barrier built out from a seashore or riverbank to protect the 

 land from erosion and sand movements, among other functions. 



H 



h 



ha 



hibernacula 



hinterland 



hydroclimate 



hydrographies 



hydrophyte 



Hour. 



One hectare (ha) = 2.47 acres (a). 



Shelters occupied during the winter by dormant animals. 

 The region behind the coastal district. 



That part of the climate that pertains to water; i.e., rainfall, 

 evaporation, water budgets, etc. 



The physical features of the oceans, lakes, rivers, and their adjoining 

 coastal areas, with particular reference to their control and utili- 

 zation. 

 A plant which grows in water or in water-logged soil. 



I 



insolation 

 isohahnes 



Solar energy received, often expressed as a rate of energy per unit 

 horizontal surface. 



A line or surface drawn on a map or chart that connects adjacent 

 points of equal salinity in the ocean or other water body. 



K 



kn 



Knot — a speedunit of one nautical mile per hour. It is equivalent 

 to a speed of 1.688 feet per second or 51.4 centimeters per sec- 

 ond. 



landfall 

 langley 



leachate 



lek 



lenses 



lentic 



lenticular 



The first sighting of land when approaching from seaward. 

 A unit of solar radiation equal to 1 gram-calorie per square centi- 

 meter of irradiated surface. 



That which is separated or dissolved out of the soluble constituents 

 of a rock or ore body by percolation of water. 

 An assembly area where animals carry on display and courtship 

 behavior. 



Geologic deposits that are thick in the middle and converge 

 toward the edges, resembling a convex lens. 



Of, relating to, or living in still waters such as lakes, ponds or 

 swamps. 

 Having the shape of a lentil or double convex lens. 



XIX 



