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Type II Type II bursts exhibit a relatively slow drift from high to low frequencies of around 1 MHz per second, typically over the course of a few minutes.They often exhibit two distinct bands of emission that correspond to fundamental and harmonic plasma emission emanating from the same region. Type II bursts are associated with coronal mass ejections (CMEs) and are produced at the leading edge of a CME, where a shock wave accelerates the electrons responsible for stimulating plasma emission.The frequency drifts from higher to lower values because it depends on the electron density, and the shock propagates outward away from the Sun through lower and lower densities. By using a model for the Sun's atmospheric density, the frequency drift rate can then be used to estimate the speed of the shock wave. This exercise typically results in speeds of around 1000 km/s, which matches that of CME shocks determined from other methods. While plasma emission is the accepted mechanism, Type...

 

Reported via MeWe platform selective dev on a reference of 3/30 for Matthew Isl Tectonic Zone Region.I confirm to news of a M7.0 env event for same geography after this M6.5 env event!!! Be safe everyone By the way,subject a tsunamy alert; And,report of a big magnitude same day;

  The volcano observatory Servicio Geológico Colombiano (SGC) raised  the alert status to "yellow" , as an elevated seismic activity has been recorded over the past two days characterized by picking up both in numbers and strength. A swarm of earthquakes became more frequent on 28 March from 20:00 local time and is still ongoing at the time of this update.  479 volcano-tectonic (VT or high-frequency) quakes  have been detected with a maximum magnitude of 3.3 that occurred at 12:14 local time today. High-frequency earthquakes are a sign that magma continues to intrude and push its way into deeper rock layers related to rock fracturing.  183 long-period (LP or low-frequency) and 119 tremor events  have been detected so far that indicate elevated fluid movements of gas, water and possibly magma intrusions within the volcano. Source: Servicio Geológico Colombiano volcano activity update 30 March 2022

 

 

 

Including a field of serious studies a role as triggering based on ground stability of seismic events for regions effected of equatorial rain regimes especially.In this point,I express to reflected selective cond of a M6.0 env event summarying apprx. 400km distance from event centre; https://watchers.news/2022/03/29/heavy-rains-trigger-deadly-landslide-leave-more-than-250-000-without-drinking-water-in-cuenca-ecuador/  

  The activity of the volcano has remained essentially unchanged characterized by intermittent vulcanian-type explosions. An explosion at the volcano produced a dense grey ash plume this morning at 10:48 local time, which reached approx. 7,600 ft (2,325 m) altitude and drifted south. The local volcano observatory reported a seismic signal with a maximum amplitude of 28 mm and a duration of 60 seconds. Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi volcano activity update 29 March 2022