The RF-Seismograph picked up the earthquake in Eureka - M5.4

[Alex Schwarz]

Hi Everybody;

The RF-Seismograph picked up a M5.4 earthquake in Eureka, California, which was recorded by USGS at 14:06UTC Apr. 12. 2019.

There was also a M6.8 quake in Luwuk, Indonesia at 2019-04-12 11:40:49 (UTC). The RF-Seismograph did not pick that one up, due to poor radio conditions.

 Here is the location:

 

The measurement of the RF-Seismograph: Please note the increase in noise on 80m (red) and also the jump on 20 and 10m. The signal increase on 40m (green) is most likely not related and is human caused. The ionosphere showed changes which were captured by the RF-Seismograph for about 1/2h before the release of the quake. Due to the poor propagation at this time the increase in noise level is marginal on 80m.

 

 

 

 

All the best and 73;

 

Alex - VE7DXW