15/03/2015. Turrialba , Kilauea , Sinabung.
Turrialba , Costa Rica :
The increase in the eruptive and seismic activity of the volcano Turrialba indicates the possibility that in the future will present a major eruption of strombolian type similar to what happened between 1864 and 1866, the only recorded historical activity this volcano. In a press conference on March 13, experts said the eruption could directly affect an area of 5 km radius around the volcano, with release of ash and incandescent emission of large blocks.
However, even in the case of an eruption of small scale, it could reach a maximum height of 8 km, the greatest impact would be suffered by the inhabitants of the provinces of San José, Heredia and Alajuela.
“The eruption yesterday (March 12) was similar to that which took place in November 2014, and because of the weather gave a greater magnitude,” said Alvarado, about the movement of ash carried by the wind. The area that was hit by falling rocks was about 400 m, while that of November last year was 800 m.
Alvarado also stressed the fact that a small eruption has a strong impact on the national economy, agricultureand especially in tourism, due to the closure of the airport.
The Turrialba began to show signs of activity there are 20 years and since 2010, when the first outbreak occurred, began a cycle of an eruption a year.
This process has increased and it is observed that “the volcano is preparing for something,” said Dr. Mora. However, they said that there is to date no confirmed indication that the magma arrived on the surface of the crater. “We did not find juvenile material (recent) around the volcano indicating that the lava is to the surface,” said Alvarado. Volcanologists said they do not have a history instrumental of the eruption of Turrialba volcano in 2010 because it was inactive. This is the first time that an eruption of this magnitude is documented with instruments, mainly seismic stations and gas temperature placed near the volcano.
12 Mars , 2:48 p.m.
Dr. Mauricio Mora says that for now the volcano is with a relatively minor seismic activity. For the next few days could be expected to eruptions similar to those in recent days. Experts analyze
samples taken and will continue to monitor the seismic-volcanic recordings to integrate information and generate a report.
Source : ucr.ac.cr
Photos : Carlos Ramírez , Francisco Arias , Lissette Rodríguez.
Kilauea , Hawai :
19 ° 25’16 “N 155 ° 17’13” W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE
K?lauea’s East Rift Zone lava flow remains active, and breakouts are concentrated on the upper 6 km (4 mi) of the flow field northeast of Pu?u ????. The lower part of the flow field near P?hoa is inactive. K?lauea Volcano continues to host a lava lake at its summit.
The breakout on the north flank of Pu?u ???? that began last weekend remains active, but has advanced only a minor distance over the past four days. The new breakout is visible as the light-colored area just to the right of the center of the photograph. Pu?u ???? Crater is in the upper left portion of the photograph
June 27th Lava Flow Observations:
The flow field near P?hoa remains inactive, based on webcam views overnight and a Hawaii County Civil Defense overflight this morning. The June 27th lava flow is still active, however, with breakouts on the north flank of Pu?u ????, near the forested cone of Kahauale‘a, and about 5 km (3 mi) northeast of Pu?u ????.
Pu?u ???? Observations:
Webcam images over the past day show no major changes in the crater. The tiltmeter on the north flank of Pu?u ???? recorded no significant deformation over the past day. The sulfur dioxide emission rate from all East Rift Zone vents was about 430 tonnes per day when last measured on March 6.
The thin crust over the lava lake within the Halema?uma?u Overlook crater was moving slowly to the southeast. During our overflight, there was no spattering and wispy gas emissions allowed clear views.
Tiltmeters operating around the summit recorded deflation over the past day. The summit lava lake level fell in response and is roughly 55-60 meters (180-200 feet) below the rim of the Overlook crater this morning. The sulfur dioxide emission rate averaged 1300-6700 tonnes/day for the week ending March 10.
Source : HVO
Sinabung, Indonesie :
since the sliding distance of the hot pyroclastic clouds showed an increase with a more distant scale than previous (about 4.7 km), it was declared the closure of the road from the village of Desa Tigapancur until the junction intersection Gurukinayan Sibintun.
Source : Sadrah Peranginangin
Photo : Beidar Sinabung