2 · en
Short, simple sentences with “geopump”, suitable for children and primary/elementary school, with common expressions and related words. You'll also find examples for middle and high school.
The method used to find underground rivers consists of a timed explosive called a geopump, invented at the Institute for Geophysical Research in Brussels. Its function is to delineate the course of underground rivers.
The geopump floats along the riverbed and is monitored from the surface by a seismic recording unit, which also contains geophones, devices that pick up low intensity seismic waves. When the geopumps are exploited, these waves are recorded in a computer which determines the direction of the underground river, thus creating a very accurate hydrographic chart.
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