Thick alluvium transitions to hard volcanics at depth, and a well on-site gives clues to the water table. One passive seismic survey collected data to a depth of 113 meters. Total survey time was 3 hours.
First ever Fibonacci spiral passive-seismic survey. Good coherencies across a large number of spacings and pairs show the quality of data collected during Fib surveys. One passive seismic survey collected data to a depth of 67 meters. Total survey time was 1.5 hour.