{"thcode":23,"term":{"code":12,"name":"Tides","parent":8,"scope":"The motions of water in ebb and flood currents, driven by the gravitational attraction of the Sun and moon on the Earth, at times influenced by wind events. Distributions are observations of tidal height, currents, and cycles, at specific locations and times, and they include maps of tidal climatology based on combinations of observations, astronomy, hydrodynamic theory, and numerical models. Assessments evaluate tidal energy potential, technologies, and risks; model the effects of tides on other uses; and evaluate risks associated with extreme tides. Predictions are the results of models or projections of future tidal climatology, tidal energy potential, effects, and risks; these data include predicted changes due to economic, regulatory, technological, and environmental changes."},"uf":[],"bt":[{"code":8,"name":"Energy Resources","parent":7,"scope":"Natural features that provide a capacity to do work through combustion, movement, radiation, or heat; these resources include oil, natural gas, coal, wind, sun, currents, tides, and natural heat gradients. Distributions are recorded observations, maps, or models of specified resources at known locations, in some cases as a function of season or other temporal scales. Assessments are evaluations of the economic or ecological value associated with the resources or of the difficulty, environmental effects, or sustainability of energy extraction and production. Some assessments can appropriately be included in the Energy Resources category and also in related Living Resources or Uses categories. Predictions are the results of models or projections of future distributions, values, or impacts of energy resources; these data include forecasts of changes due to natural and human processes, such as resource losses or gains under different rates of resource extraction, effects of climate change, and so on."},{"code":7,"name":"Nonliving Resources","parent":6,"scope":"Data are about chemical, physical, or geological features that are of use or importance to humans or ecologies."},{"code":6,"name":"Data Content Subjects","parent":1,"scope":"Environmental characteristics and processes as well as human activities that use, rely on, or impact those features."},{"code":1,"name":"Data Categories for Marine Planning","parent":null,"scope":"Categories indicating the breadth of information types required for ocean planning from a national, multidisciplinary perspective. Published in USGS Open-File Report 2015-1046, doi:10.3133\/ofr20151046"}],"nt":[],"rt":[]}