The refraction of elastic waves on passing between formations of rock having different seismic velocities.
〔地质〕地震折射
Example sentencesExamples
Large amounts of seismic refraction and reflection data have greatly improved knowledge of the crustal structure along the outer Voring Basin and the Voring Marginal High.
Gravity and seismic refraction studies have shown that segments tend to have the thickest crust (about 8 km at slow-spreading ridges) at their centres and thin crust at their ends.
However, a number of seismic packages are recognizable in the offshore Palaeozoic succession and in some cases correlate with velocity units identified by seismic refraction surveys.
It extends upwards from a depth of about 6 km, at which depth Precambrian crystalline basement is predicted from seismic refraction studies.
The sedimentary basin architecture has been extensively mapped using seismic reflection profiles, and the nature of the crust has been probed with seismic refraction data.
Definition of seismic refraction in US English:
seismic refraction
noun
Geology
The refraction of elastic waves on passing between bodies of rock having different seismic velocities.
〔地质〕地震折射
Example sentencesExamples
It extends upwards from a depth of about 6 km, at which depth Precambrian crystalline basement is predicted from seismic refraction studies.
Large amounts of seismic refraction and reflection data have greatly improved knowledge of the crustal structure along the outer Voring Basin and the Voring Marginal High.
Gravity and seismic refraction studies have shown that segments tend to have the thickest crust (about 8 km at slow-spreading ridges) at their centres and thin crust at their ends.
However, a number of seismic packages are recognizable in the offshore Palaeozoic succession and in some cases correlate with velocity units identified by seismic refraction surveys.
The sedimentary basin architecture has been extensively mapped using seismic reflection profiles, and the nature of the crust has been probed with seismic refraction data.