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Green curves show hypothetical Earths with density constant (dashed) and decreasing linearly from center to surface (stippled) The preliminary reference Earth model (PREM) plots the average of Earth's properties by depth. [1] It includes a table of Earth properties, including elastic properties, attenuation, density, pressure, and gravity.
Download QR code; Print/export Download as PDF; Printable version ... There are many different types of data formats used in the earth sciences. Being able to find a ...
GeographicLib provides a utility GeoidEval (with source code) to evaluate the geoid height for the EGM84, EGM96, and EGM2008 Earth gravity models. Here is an online version of GeoidEval . The Tracker Component Library from the United States Naval Research Laboratory is a free Matlab library with a number of gravitational synthesis routines.
Natural Earth is a public domain map dataset available at 1:10 million (1 cm = 100 km), 1:50 million, and 1:110 million map scales. [ clarification needed ] Natural Earth's data set contains integrated vector and raster mapping data.
Earth's rotational velocity also varies in a phenomenon known as length-of-day variation. [172] Earth's annual orbit is elliptical rather than circular, and its closest approach to the Sun is called perihelion. In modern times, Earth's perihelion occurs around 3 January, and its aphelion around 4 July.
Geology – Scientific study of Earth's physical composition; Geology of the Alps – The formation and structure of the European Alps; Geomorphology – Scientific study of landforms; Geostatistics – Branch of statistics focusing on spatial data sets; Geyser – Natural explosive eruption of hot water
dGB Earth Sciences GPL or custom Cross-platform: C++: Interfaces with GMT Modelgeo [21] General 3D mathematics with modelling and visualization of geoscience data ModelGeo AS Free for non-profit use Windows C++, TCL: Originally a petroleum geology program, reads all common geology and geophysics data formats ParaViewGeo [22]
NASA true-color image of the Earth's surface and atmosphere. Physical geography (also known as physiography) is one of the two fields of geography. [1] [2] [3]Physical geography is the branch of natural science which deals with the processes and patterns in the natural environment such as the lithosphere, hydrosphere, atmosphere, pedosphere geosphere and global flora and fauna patterns ...