Oceans and Groundwater
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Created by:
lauramackenzie on March 25, 2012
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29 terms
Terms | Definitions |
|---|---|
 Bathymetry | the measurement of the depth to the ocean floor, and the mapping of its features |
| halocine | rapid change in salinity with depth |
| thermocline | The depth zone where temperature decreases more rapidly. |
| Pycnocline | where density rapidly increases from 200 to 1000 meters |
| Northern hemisphere | clockwise |
| southern hemisphere | counter clockwise |
| thermohaline circulation | patterns of deep currents |
| spring tide | largest tidal bulge, highest tide |
| neap tide | smallest tidal bulge, lowest tide |
| tides | changes in the sea surface height caused by the gravitational attraction of the moon |
| Rip currents | Narrow currents of water flowing through gaps in sandbars lying just offshore |
| Sediment budget | process where shorelines are constantly changing as materials are eroded, transported and deposited |
| spit | sandbar partially blocking the sandbar |
| Baymouth Bar | sand bar that completely blocks a channel |
| Groins | wall-like structures built perpendicular to the shoreline as barriers to longshore currents |
| Longshore currents | transport sediment parallel to the beach in the surf zone |
| breakwater | barriers built offshore to protect part of the shoreline |
| porosity | portion of a material that is made up of spaces |
| specific yield | the groundwater that can drain from a rock or sediment |
| specific retention | water on the surface of grains that will not flow through the materials |
| permeability | the capacity of water to flow through earth materials |
| aquifers | bodies of rock or sediment where groundwater is stored |
| aquitards | low permeability materials such as clay that act as a barrier to wtaer flow |
| losing streams | flow over ground in dry areas and lose water into the groundwater supply |
| graining strains | grain water from an area with a high water table |
| thermocline | The depth zone where temperature decreases most rapidly |
| Subsidence | A drop in the ground surface in response to a decrease in volume of the underlying sedimenthttp://quizlet.com/10952444/edit/#add-row |
| 11 km Mariana trench | deepest part of ocean |
| temperature, currents, fresh water input | salinity is influenced by |
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