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The Camp Lejeune water contamination problem occurred at Marine Corps Base Camp Lejeune in Jacksonville, North Carolina, from 1953 to 1987. [1] During that time, United States Marine Corps (USMC) personnel and families at the base — as well as many international, particularly British, [2] assignees — bathed in and ingested tap water contaminated with harmful chemicals at all concentrations ...
Waterlogged wood is a wooden object that has been submerged or partially submerged in water and has affected the original intended purpose or look of the object. Waterlogged wood objects can also include wood found within moist soil from archaeological sites, underwater archaeology, maritime debris, or damaged wood objects.
The Universal Soil Loss Equation (USLE) is a widely used mathematical model that describes soil erosion processes. [1]Erosion models play critical roles in soil and water resource conservation and nonpoint source pollution assessments, including: sediment load assessment and inventory, conservation planning and design for sediment control, and for the advancement of scientific understanding.
Ships are polluting both in the marine environment and in the atmosphere, and although it is difficult to estimate the magnitude of the problem, there is no uncertainty that increased usage of such ships will increase pollution. As the underwater logging industry becomes more popular and profitable, this increased usage will occur. [5]
This is a soil test-based definition, usually performed via cyclic triaxial, cyclic direct simple shear, or cyclic torsional shear type apparatus. These tests are performed to determine a soil's resistance to liquefaction by observing the number of cycles of loading at a particular shear stress amplitude required to induce 'fails'.
Geotechnical surveys involve a combination of sampling, drilling, in situ testing as well as laboratory soil testing that is conducted offshore and, with samples, onshore. They serve to ground truth the results of the geophysical investigations; they also provide a detailed account of the seabed stratigraphy and soil engineering properties. [23]
The Center for Naval Analyses (CNA) is a federally funded research and development center (FFRDC) for the United States Navy and Marine Corps.It also provides research and analysis services to other US Defense Department and certain other US Government agencies to help improve the efficiency and effectiveness of U.S. national defense efforts.
Surface runoff (also known as overland flow or terrestrial runoff) is the unconfined flow of water over the ground surface, in contrast to channel runoff (or stream flow).It occurs when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficiently rapidly infiltrate in the soil.