Wednesday, 28 October 2020

Drone Provides A Look Inside Turrialba’s Active Crater

Q COSTA RICA – Photographs taken by a drone, some 300 meters over the active crater of the Turrialba volcano, allowed volcanologists for the first time look inside the colossus.

What was learned is that the active crater’s inner walls exhibit slopes that exceed 55 degrees of inclination and the mouth of the volcano is 126 meters ( 413 feet) deep. To put that in perspective, it is 1.5 times the Banco Nacional building in San Jose (which measures 83 meters high).

The crater measures 69,000 square meters ( 742,000 square feet), for example, covers an area a little larger than the National Stadium.

- Advertisement -

Not only that, at the bottom, there is an internal crater from where volcanic materials such as ash, pyroclasts (fragments of magma) and gases are emitted, that measures 189 meters wide

In fact, thanks to the Digital Elevation Model or DEM generated from images taken by the drone, researchers were able to calculate the volume of material that would fit in that hole: 2.3 million cubic meters, the equivalent of 165,000 truck loads.

According to Paulo Ruiz, a geologist at the National Laboratory of Materials and Structural Models (Lanamme) at the University of Costa Rica (UCR), the erupted material so far has been old, but if the 2.3 million cubil meters had been juvenile material, we would be at the first level of the explosive index.

Ruiz said the flyovers were done in March 2016, “just before the eruptions of April and May of that year, which changed the volcanic system.”

- Advertisement -

Digital model of elevation (DME) of the active crater of Turrialba volcano to March 2016. (Courtesy of Lanamme)

Ruiz added that to define the date and flight plan for the drone, weather and seismic activity had to be monitored so that “there were no earthquakes.”

The images taken were processed at the Lanamme laboratory using the Agisoft 3D modeling and mapping software.

“Our DEMs will be very useful in understanding how craters form during eruptions,” Ruiz said.

Thanks to this model, the researchers observed that the gap that opened on the side wall of the southwest (active) crater in 2010 when it began eruptive activity, generated a terrace 60 meters long, 35 meters wide and 81 meters deep

“The other thing we have seen is that the central (non-active) crater has been filling up because the ash (from the active crater) is falling there, fill by the runoff,” said the geologist.

- Advertisement -

“If we were to fly again, I’m sure we would see a lot of changes that happened from year to year,” said Ruiz, who clarified that this is the goal and this year they have not yet flown over the crater because volcano activity has not permitted it.

Sources: La Nacion; Lanamme

- Advertisement -
Ricohttp://www.theqmedia.com
"Rico" is the crazy mind behind the Q media websites, a series of online magazines where everything is Q! In these times of new normal, stay at home. Stay safe. Stay healthy.

Related Articles

Contagion rate in Costa Rica continues to decline

QCOSTARICA - The COVID-19 contagion rate in Costa Rica has been...

UCR doctors have ready the first non-invasive ventilator ready for patients with COVID-19

(QCOSTARICA) The first model of non-invasive ventilation and with a built-in...

MOST READ

CCSS hires 4,000 temporary employees to reinforce the fight against COVID-19

QCOSTARICA - More than 4,000 temporary workers join the payroll of the Costa Rican Social Security Fund (CCSS) to face the care of the...

14 cases of COVID-19 confirmed in new Congress building

QCOSTARICA - Fourteen officials of the Legislative Assembly were diagnosed with COVID-19 on Tuesday. The cases resulted in a temporary suspension of functions, including legislative...

“Gag Law” approved by Ortega will enter into force in 60 days

TODAY NICARAGUA – The 70 votes of the ruling Frente Sandinista (Sandinista Front) in the National Assembly approved, without opposition, the Special Law on...

Foreigners represent 14% of the patients treated for covid-19 in hospitals

QCOSTARICA - Of the 410,000 people with inquiries related to the new coronavirus at the medical centers of the Costa Rican Social Security Fund...

Costa Rica’s new Congress building becomes a ‘super spreader’

QCOSTARICA - After six and a half hours of discussion on the Legislative floor, Eduardo Cruickshank, chairman of the Legislative Assembly, suddenly stopped the...

COVID-19 in Costa Rica: 1,262 new cases for Oct 24

QCOSTARICA - On Saturday, October 24, the Ministry of Health reported 1.262 new cases of COVID-19, of which 246 are by epidemiological link and...

Let's Keep This Going!

To be updated with all the latest news and information about Costa Rica and Latin America.

Log In

Forgot password?

Forgot password?

Enter your account data and we will send you a link to reset your password.

Your password reset link appears to be invalid or expired.

Log in

Privacy Policy

Add to Collection

No Collections

Here you'll find all collections you've created before.