Spatial variability

Spatial variability occurs when a quantity that is measured at different <a href="/facts/Spatial_location/fXux5RaJ">spatial locations</a> exhibits values that differ across the locations. Spatial variability can be assessed using <a href="/facts/Spatial_descriptive_statistics/48XCbYCL">spatial descriptive statistics</a> such as the <a href="/facts/Range_(statistics)/Yu0HgeRj">range</a>.
Let us suppose that the Rev' z(x) is perfectly known at any point x within the field under study. Then the <a href="/facts/Uncertainty/VM9pnGvk">uncertainty</a> about z(x) is reduced to zero, whereas its spatial variability still exists. Uncertainty is closely related to the amount of spatial variability, but it is also strongly dependent upon sampling.
<a href="/facts/Geostatistics/UeChfgNG">Geostatistical</a> analyses have been strictly performed to study the spatial variability of pesticide sorption and degradation in the field. Webster and Oliver provided a description of geostatistical techniques. Describing uncertainty using geostatistics is not an activity exempt from uncertainty itself as <a href="/facts/Variogram/CwGluDx3">variogram</a> uncertainty may be large and <a href="/facts/Spatial_interpolation/qj0F4Jze">spatial interpolation</a> may be undertaken using different techniques.

Spatial variability open-in-new

Spatial variability