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Machin ηφαίστειο

Τελευταία ανανενώση: 4 Φεβρουαρίου 2023 05:25 GMT -
stratovolcano 2650+ m / 8,694 ft
Κολομβία, 4.48°N / -75.39°W
Current status: normal or dormant (1 out of 5)
Last update: 7 Dec 2022 (Smithsonian / USGS Weekly Volcanic Activity Report)

Cerro Machín volcano is a small stratovolcano about 20 km WNW of the city of Ibagué, Colombia. Although there are no historic eruptions, Machin is considered one of the most dangerous volcanoes in Colombia, because it has produced devastating explosive eruptions in its past and will likely to continue so. Pyroclastic flow deposits have been found up to 40 km and mud flow deposits (lahars) up to 109 km distance from the volcano along the Coello and Magdalena rivers.
The last known activity took place about 800 years ago.

Διαδραστικός χάρτης
Typical eruption style: Εκρηκτικό, φρεατικό,
Machin ηφαίστειο εκρήξεις: 1180 ± 150, 2100 BC ± 200, 2240 BC ± 300, 3800 BC ± 150

Latest nearby earthquakes

ΏραMag. / ΒάθοςΑπόσταση/Τοποθεσία
Πέμπτη, 2 Φεβρουαρίου 2023 GMT (1 σεισμός)
2 Φεβ 2023 05:46 (GMT -5) (2 Φεβ 2023 10:46 GMT)
2.0

23 km
40 km (25 mi)
2 km ανατολικά από Payandé, Κολομβία
Τρίτη, 31 Ιανουαρίου 2023 GMT (1 σεισμός)
31 Ιαν 2023 08:49 (GMT -5) (31 Ιαν 2023 13:49 GMT)
1.6

13 km
37 km (23 mi)
Colombia
Πέμπτη, 26 Ιανουαρίου 2023 GMT (1 σεισμός)
26 Ιαν 2023 10:24 (GMT -5) (26 Ιαν 2023 15:24 GMT)
1.8

75 km
20 km (12 mi)
6 km νότια από Ibagué, Departamento de Tolima, Κολομβία
Σάββατο, 21 Ιανουαρίου 2023 GMT (2 σεισμοί)
21 Ιαν 2023 07:09 (GMT -5) (21 Ιαν 2023 12:09 GMT)
3.0

4.5 km
1.4 km (0.9 mi)
19 km δυτικά από Ibagué, Departamento de Tolima, Κολομβία
21 Ιαν 2023 06:57 (GMT -5) (21 Ιαν 2023 11:57 GMT)
3.2

4.4 km
1.2 km (0.7 mi)
19 km δυτικά από Ibagué, Departamento de Tolima, Κολομβία

Background

The small Machín stratovolcano forms the southern end of the Ruiz-Tolima massif. It contains a 3-km-wide caldera breached to the south. There are 3 forested dacitic lava domes inside the caldera.

Machin Φωτογραφίες



2011 unrest
The number of earthquakes increased at Machin volcano on 31 December 2010. Over the next 4 days, 367 volcano-tectonic earthquakes were recorded south and southwest of the main lava dome in the summit caldera.
The largest event occurred at 5:22 pm on 1 January 2011, with a magnitude 2.3 at a depth of 3.3 km. The earthquake was felt by residents in vicinity of the volcano and in the town of Cajamarca (Tolima).
(USGS / GVP weekly reports)

2008 seismic unrest
An earthquake swarm occurred at Machín volcano on 9 November 2008. The increase in earthquakes was accompanied by an increase in fumarolic activity and there was damage to some buildings (USGS / GVP weekly reports).

2004 seismic unrest
In April 2004, a swarm of earthquakes occurred at Machín volcano. More than 60 earthquakes occurred daily, in comparison to the normal number of 1-10 quakes. (USGS/GVP weekly updates)

See also: Sentinel hub | Landsat 8 | NASA FIRMS
Wed, 7 Dec 2022, 15:00

Machin volcano (Colombia) - Smithsonian / USGS Weekly Volcanic Activity Report for 30 November-6 December 2022 (Continuing Activity)

On 2 December SGC reported that an increase in seismicity was detected at Cerro Machín beginning at 1123 on 2 December, with signals indicating rock fracturing. By 1320 a total of 393 signal were counted. The largest event, a M 4.5 recorded at 1236, was located 900 m SSW of the main dome at a depth of 3 km and was felt in Cajamarca (14 km WSW), Ibagué (17 km ESE), and in other municipalities of Tolima. ... Read all
Wed, 13 May 2020, 07:21

Machin volcano (Colombia) activity update: seismic unrest continues

Machin volcano and its lava dome (image: @sgcol/twitter)
The Servicio Geológico Colombiano (SGC) recorded that the seismic activity continues at elevated levels. Most seismic activity has been associated with rock fracturing. ... Read all
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