very strange autocorrelation curves

This forum is dedicated to discuss all problems and suggestions related to the use of geopsy database and its plugins (array processing, H/V,...).
Post Reply
luigiV
Posts: 121
Joined: Fri Jul 17, 2020 9:28 am

very strange autocorrelation curves

Post by luigiV »

Hi Marc,
please could you help us understand why we got such unusual autocorrelation curves?
The attached figure shows the geometry of the array. The sensors are Lennartz 3C 5s and Minishark recorders. The 3Cdata allowed the calculation of good quality spectral curves with a low frequency peak at all seven stations.
What is, in your experience, the reason for the sinusoidal trend of the lower frequency data (we have verified that the response is the same starting from 0.2Hz)?
Best Regards
Attachments
array.jpg
(103.52 KiB) Not downloaded yet
target_file.jpg
(75.78 KiB) Not downloaded yet
Post Reply