Definition of thermometer : an instrument for determining temperature; especially: one consisting of a glass bulb attached to a fine tube of glass with a numbered scale and containing a liquid (such as mercury or colored alcohol) that is sealed in and rises and falls with changes of temperature
Indian Removal Act â 1830. Signed into law in 1830 by President Andrew Jackson, the Indian Removal Act provided for the general resettlement of Native Americans from east of the Mississippi River to lands west (Indian Territory).Although the removal was supposed to be voluntary, removal became mandatory whenever the government thought necessary.he first removal treaty to follow the passage of the Indian Removal Act was with the Choctaw Nation (1830). In 1838 the Cherokee Nation was removed to reservations in what has been called âThe Trail of Tears.â It is estimated that almost 8,000 Cherokee people died on the forced march or shortly thereafter.
From Wikipedia, the free encyclopedia. Seismic migration is the process by which seismic events are geometrically re-located in either space or time to the location the event occurred in the subsurface rather than the location that it was recorded at the surface, thereby creating a more accurate image of the subsurface. form of migration is one of the standard data processing techniques for reflection-based geophysical methods (seismic reflection and ground-penetrating radar). The need for migration has been understood since the beginnings of seismic exploration and the very first seismic reflection data from 1921 were migrated.