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The USGS SRTM data is based on NASA's SIR-C instrument. It is available in at the following versions: Version 1 (2003–2004) is almost the raw data. [7] Version 2.1 (~2005) is an edited version of v1. Artifacts are removed, but voids are not yet filled. There are 1-arcsecond data over the US. [8]
Successful installation of nested wells has been reported by the U.S. Geological Survey [6] in deep (several hundreds to over one thousand feet), large diameter boreholes (≥12 in), with multiple casings (monitoring zones), resulting in seals that are several tens to hundreds of feet thick. This work illustrates that nested wells can be useful ...
The Floridan aquifer system underlies portions of five states. Source: USGS. The Floridan aquifer system spans an area of about 100,000 square miles (260,000 km 2) in the southeastern United States and underlies all of Florida and parts of southern Alabama, southeastern Georgia, and southern South Carolina. [1]
Evidence for this includes geological observations, the longest instrumental records and the observed rate of 20th century sea level rise. For example, geological observations indicate that during the last 2,000 years, sea level change was small, with an average rate of only 0.0–0.2 mm per year.
MODFLOW simulation. MODFLOW is the U.S. Geological Survey modular finite-difference flow model, which is a computer code that solves the groundwater flow equation.The program is used by hydrogeologists to simulate the flow of groundwater through aquifers.
A Level 1 data record is the most fundamental (i. e., highest reversible level) data record that has significant scientific utility, and is the foundation upon which all subsequent data sets are produced. Level 2 is the first level that is directly usable for most scientific applications; its value is much greater than the lower levels.
(Paleo is from an ancient Greek word meaning "old" or "ancient".) [1] Paleoshorelines are driven by changes in sea level over geological time. "Sea level" refers to the average level of a marine water body over a relatively long period of time (years). [2] Fluctuations in sea level is largely due to the melting and freezing of ice sheets.
The Arcadia Formation developed when sea levels rose to flood much of the Florida Platform late in the Oligocene epoch. While part of central Florida remained above sea level as Orange Island, southern Florida was covered by the Okeechobean Sea, which extended over the Everglades basin, and was bound on the south by oyster banks, the Collier ...