Gaia «chunga»

Aira (Japan) - Report for 6 June-12 June 2018

Actividad volcánica (SI/USGS) - Mié, 2018/06/13 - 07:33

JMA reported that there were eight events and five explosions at Minamidake crater (at Aira Caldera?s Sakurajima volcano) during 4-11 June. Crater incandescence was occasionally visible at night. Ash plumes rose up to 2 km above the crater rim, except an event at 1135 on 10 June produced a plume that rose 3.5 km. Tephra was ejected as far as 1.3 km from the crater during 8-11 June. The Alert Level remained at 3 (on a 5-level scale).

Source: Japan Meteorological Agency (JMA)

Categorías: Gaia «chunga»

Kilauea (United States) - Report for 6 June-12 June 2018

Actividad volcánica (SI/USGS) - Mié, 2018/06/13 - 07:33

HVO reported that the eruption at Kilauea?s Lower East Rift Zone (LERZ) and at Overlook Crater within Halema`uma`u Crater continued during 7-12 June. Lava fountaining and spatter was concentrated at Fissure 8, feeding lava flows that spread through Leilani Estates and Lanipuna Gardens subdivisions, and built out the coastline where the fast-moving flow entered the ocean in the Kapoho Bay area. Minor lava activity at Fissures 16/18 was occasionally noted. Inward slumping of the crater rim and walls of Halema`uma`u continued, adjusting from the withdrawal of magma and subsidence of the summit area; the floor had subsided at least 100 m during the previous few weeks, and by 12 June the lowest point was 300 m below the crater rim. Steam plumes rose from areas in the crater as well as from circumferential cracks adjacent to the crater. Summit explosions occurred almost daily. Explosions at 1607 and 0244 on 6 and 8 June, respectively, each produced an ash plume that rose 3 km (10,000 ft) a.s.l. An explosion was recorded at 0448 on 9 June. Two explosions, the second larger than the first, were recorded at 0046 and 0443 on 11 June. An ash-poor explosion occurred at 0152 on 12 June. A pattern of an increasing number of earthquakes, an explosion, and then a drop-off of seismicity immediately afterwards had emerged during the past few weeks and continued. A total of 12 rockfalls in Pu'u 'O'o Crater were recorded between 1031 and 1056 on 8 June, following a M 3.2 earthquake at the summit. A red dust plume was visible around 1050 but dissipated quickly. Fountaining at Fissue 8 was stable, though by 10 June three closely spaced fountains were active within the 35-m-high spatter cone. The heights of the fountains varied, but rose no higher than 70 m. Pele's hair and other volcanic glass from the fountaining fell within Leilani Estates. The fountains continued to feed the fast-moving lava flow that traveled NE, and then SE around Kapoho Crater, and into the ocean. The width of the channel varied from 100-300 m along its length. Periodic overflows sometimes sent small flows down the sides of the channel. Lava entered the ocean at Kapoho Bay, building a lava delta that by 11 June was just over 100 hectares in area. A plume of laze rose from the entry points. An area of strong thermal upwelling in the ocean around 920 m out from the visible lava-delta front was visible beginning on 7 June, suggesting lava flowing on the ocean floor. According to a news report, the Hawaii County Mayor noted that by 8 June lava flows had destroyed over 600 homes.

Sources: US Geological Survey Hawaiian Volcano Observatory (HVO) ,USA Today

Categorías: Gaia «chunga»

Sheveluch (Russia) - Report for 6 June-12 June 2018

Actividad volcánica (SI/USGS) - Mié, 2018/06/13 - 07:33

KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 5-6 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Categorías: Gaia «chunga»

San Miguel (El Salvador) - Report for 30 May-5 June 2018

Actividad volcánica (SI/USGS) - Mié, 2018/06/06 - 08:08

SNET reported a significant increase in the number of low- and high-frequency earthquakes beneath San Miguel?s crater beginning on 22 May. RSAM values fluctuated between 142 and 176 units (normal values are 50-150 units) during 30 May-1 June. Webcam images on 30 May showed a small gray gas emission.

Source: Servicio Nacional de Estudios Territoriales (SNET)

Categorías: Gaia «chunga»

Suwanosejima (Japan) - Report for 30 May-5 June 2018

Actividad volcánica (SI/USGS) - Mié, 2018/06/06 - 08:08

Based on JMA notices and satellite data, the Tokyo VAAC reported an explosion at Suwanosejima on 2 June.

Source: Tokyo Volcanic Ash Advisory Center (VAAC)

Categorías: Gaia «chunga»

Yasur (Vanuatu) - Report for 30 May-5 June 2018

Actividad volcánica (SI/USGS) - Mié, 2018/06/06 - 08:08

Based on webcam images and model data, the Wellington VAAC reported that during 5-6 June intermittent, low-level ash plumes from Yasur rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted NW. Ash was not identified on satellite imagery.

Source: Wellington Volcanic Ash Advisory Center (VAAC)

Categorías: Gaia «chunga»

Merapi (Indonesia) - Report for 30 May-5 June 2018 - NEW

Actividad volcánica (SI/USGS) - Mié, 2018/06/06 - 08:08

PVMBG reported that at 0820 on 1 June an event at Merapi generated an ash plume that rose at least 6 km above the crater rim and drifted NW, but then winds changed to the SW. Ashfall was reported at the Selo observation post. Observers noted white smoke rising from a forested area 1.5 km NW, possibly indicating burning vegetation. The report noted that volcano-tectonic events were occurring at about 3 km below the crater. Later that day at 2024 an ash plume from a 1.5-minute-long event rose 2.5 km above the crater rim and drifted NE and W. At 2100 an ash plume rose 1 km and drifted NW. The Alert Level remained at 2 (on a scale of 1-4), and PVMBG noted that all people within 3 km of the summit should be evacuated.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

Categorías: Gaia «chunga»

Piton de la Fournaise (France) - Report for 30 May-5 June 2018

Actividad volcánica (SI/USGS) - Mié, 2018/06/06 - 08:08

OVPF reported that during an overflight of Piton de la Fournaise on 29 May scientists noted that the vent atop the main cone (about 22-25 m high) was about 5 m in diameter. Slumping and small collapses on the flanks were visible, and gas emissions rose from the vent. Based on seismicity, OVPF stated that at 1430 on 1 June the eruption that began on 27 April was over.

Source: Observatoire Volcanologique du Piton de la Fournaise (OVPF)

Categorías: Gaia «chunga»

Sabancaya (Peru) - Report for 30 May-5 June 2018

Actividad volcánica (SI/USGS) - Mié, 2018/06/06 - 08:08

Observatorio Vulcanológico del Sur del IGP (OVS-IGP) and Observatorio Vulcanológico del INGEMMET (OVI) reported that explosive activity at Sabancaya was comparable to the previous week; explosions averaged 28 per day during 28 May-3 June. Seismicity was dominated by long-period events and signals indicating emissions. Gas-and-ash plumes rose as high as 4.3 km above the crater rim and drifted 40 km NE, E, and SE. The MIROVA system detected six thermal anomalies, and on 30 May the sulfur dioxide gas flux was high at 5,571 tons/day. The report noted that the public should not approach the crater within a 12-km radius.

Sources: Instituto Geofísico del Perú (IGP),Instituto Geológico Minero y Metalúrgico (INGEMMET)

Categorías: Gaia «chunga»

M 5.5 - 57km E of Atka, Alaska

USGS Earthquakes M > 4.5 - Mié, 2017/03/01 - 12:01

PAGER - GREEN ShakeMap - IV

Time
2017-03-01 10:39:49 UTC
2017-03-01 00:39:49 -10:00 at epicenter
Location
52.173°N 173.364°W
Depth
58.17 km (36.15 mi)
52.1729 -173.3643-58170
Categorías: Gaia «chunga»

M 4.9 - Northern Mid-Atlantic Ridge

USGS Earthquakes M > 4.5 - Mié, 2017/03/01 - 10:37
Time
2017-03-01 09:08:15 UTC
2017-03-01 07:08:15 -02:00 at epicenter
Location
49.609°N 28.464°W
Depth
10.00 km (6.21 mi)
49.6085 -28.4637-10000
Categorías: Gaia «chunga»

M 5.5 - 229km NW of Saumlaki, Indonesia

USGS Earthquakes M > 4.5 - Mié, 2017/03/01 - 08:33

PAGER - GREEN ShakeMap - III DYFI? - III

Time
2017-03-01 06:59:40 UTC
2017-03-01 15:59:40 +09:00 at epicenter
Location
6.325°S 130.029°E
Depth
130.99 km (81.39 mi)
-6.325 130.0288-130990
Categorías: Gaia «chunga»

M 5.0 - 36km ENE of Namie, Japan

USGS Earthquakes M > 4.5 - Mié, 2017/03/01 - 08:17

DYFI? - III

Time
2017-03-01 06:43:05 UTC
2017-03-01 15:43:05 +09:00 at epicenter
Location
37.576°N 141.398°E
Depth
51.15 km (31.78 mi)
37.576 141.3978-51150
Categorías: Gaia «chunga»

M 5.1 - 215km NW of Farallon de Pajaros, Northern Mariana Islands

USGS Earthquakes M > 4.5 - Mié, 2017/03/01 - 07:27
Time
2017-03-01 06:08:53 UTC
2017-03-01 16:08:53 +10:00 at epicenter
Location
21.641°N 143.190°E
Depth
290.36 km (180.42 mi)
21.6405 143.1896-290360
Categorías: Gaia «chunga»

M 4.9 - 104km NNE of Kali, Indonesia

USGS Earthquakes M > 4.5 - Mié, 2017/03/01 - 05:54
Time
2017-03-01 04:35:11 UTC
2017-03-01 12:35:11 +08:00 at epicenter
Location
2.084°N 121.618°E
Depth
10.00 km (6.21 mi)
2.0844 121.6181-10000
Categorías: Gaia «chunga»

M 4.5 - 143km SE of Taron, Papua New Guinea

USGS Earthquakes M > 4.5 - Mié, 2017/03/01 - 03:56
Time
2017-03-01 02:32:14 UTC
2017-03-01 12:32:14 +10:00 at epicenter
Location
5.519°S 153.795°E
Depth
36.75 km (22.84 mi)
-5.5188 153.7951-36750
Categorías: Gaia «chunga»

M 4.9 - 123km SSE of Kuril'sk, Russia

USGS Earthquakes M > 4.5 - Mié, 2017/03/01 - 02:04
Time
2017-03-01 00:42:47 UTC
2017-03-01 10:42:47 +10:00 at epicenter
Location
44.205°N 148.477°E
Depth
42.22 km (26.23 mi)
44.2047 148.4769-42220
Categorías: Gaia «chunga»

M 4.6 - 17km NNW of Mithymna, Greece

USGS Earthquakes M > 4.5 - Mié, 2017/03/01 - 00:53

DYFI? - IV

Time
2017-02-28 23:27:34 UTC
2017-03-01 01:27:34 +02:00 at epicenter
Location
39.510°N 26.102°E
Depth
10.00 km (6.21 mi)
39.5101 26.1024-10000
Categorías: Gaia «chunga»

M 4.9 - 145km NW of Kota Ternate, Indonesia

USGS Earthquakes M > 4.5 - Mar, 2017/02/28 - 20:57
Time
2017-02-28 19:16:45 UTC
2017-03-01 03:16:45 +08:00 at epicenter
Location
1.820°N 126.567°E
Depth
30.40 km (18.89 mi)
1.8199 126.5665-30400
Categorías: Gaia «chunga»

M 5.0 - 11km WNW of Laiwui, Indonesia

USGS Earthquakes M > 4.5 - Mar, 2017/02/28 - 20:37

Time
2017-02-28 19:08:33 UTC
2017-03-01 04:08:33 +09:00 at epicenter
Location
1.319°S 127.567°E
Depth
28.52 km (17.72 mi)
-1.3189 127.5671-28520
Categorías: Gaia «chunga»
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