Analysis of spatial soil moisture dynamics using wireless sensor networks
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Beschreibung
To understand short-term and long-term dynamics in spatial soil moisture patterns at the small
catchment scale, appropriate measurement techniques are needed. Recently developed
wireless sensor networks help to bridge the gap between local (e.g. hydrogeophysical
methods) and regional soil moisture measurement techniques (e.g. satellite borne remote
sensing). Wireless sensor networks like SoilNet routinely provide continuous soil moisture
data with both high temporal and spatial resolution, also spatial coverage of a given test site.
An essential requirement for the development of a wireless sensor network is the selection of
appropriate soil water content sensors. Low-cost sensors are often criticized concerning their
measurement accuracy in terms of considerable variation between individual sensors,
temperature-dependency and spurious effects of electrical conductivity on the sensor
response.
Autor*in
Ulrike Rosenbaum