sediment core
1Sediment Profile Imagery — (SPI) is an underwater technique for photographing the interface between the seabed and the overlying water. The technique is used to measure or estimate biological, chemical, and physical processes occurring in the first few centimetres of… …
2Core sample — Rock core samples. The product of a Diamond rig. (The bird is a Pied Butcherbird.) A core sample is a cylindrical section of (usually) a naturally occurring substance. Most core samples are obtained by drilling with special drills into the… …
3Pollen core — A pollen core is a core sample of a medium containing a stratigraphic sequence of pollen. Analysis of the type and frequency of the pollen in each layer is used to study changes in climate or land use using regional vegetation as a proxy. This… …
4marine sediment — Any deposit of insoluble material, primarily rock and soil particles, transported from land areas to the ocean by wind, ice, and rivers, as well as the remains of marine organisms, products of submarine volcanic activity, and chemical… …
5Ice core — An ice core is a core sample from the accumulation of snow and ice over many years that have re crystallized and have trapped air bubbles from previous time periods. The composition of these ice cores, especially the presence of hydrogen and… …
6ice core — ▪ geology Introduction long cylinder of glacial ice recovered by drilling through glaciers in Greenland, Antarctica, and high mountains around the world. Scientists retrieve these cores to look for records of climate change over the last… …
7North Greenland Ice Core Project — Delta O 18 record from the NGRIP core The drilling site of the North Greenland Ice Core Project (NGRIP or NorthGRIP) is near the center of Greenland (75.1 N, 42.32 W, 2917 m, ice thickness 3085). Drilling began in 1999 and was completed at… …
8deep-sea core — /deep see /, Oceanog. an intact sample of sediment extracted from the ocean floor by drilling with a long hollow tube. * * * …
9deep-sea core — /deep see /, Oceanog. an intact sample of sediment extracted from the ocean floor by drilling with a long hollow tube …
10Gyttja — (auch Grauschlammboden oder Mudde genannt) ist ein subhydrischer Boden (Unterwasserboden) in gut durchlüfteten nährstoffreichen Gewässern bzw. entsteht bei längerfristiger bis ganzjähriger Überflutung/Überstauung. Der graue bis grauschwarze… …
