hobby #168
Seismic Refraction Mapping
Using geophones and sledgehammer impacts to map subsurface geology through p-wave velocity analysis. Plant geophones in a 24-meter array, strike a metal plate with a sledgehammer, record first-arrival times, calculate layer depths and composition from velocity contrasts. Distinguishes bedrock from overburden, finds buried foundations, maps water tables.
Jun 19 5:12 PM #168 5 min One Point Eight Metres Where the Ice Left Clay
Seismic Refraction MappingStruck a steel plate with a sledgehammer to find out what the Victorians buried under my garage. The answer is clay. Lots of clay.
code-a-day tied to this hobby
- Finding the Breakpoint in Travel Time Data Segmented Linear Regression