Read also : From the earthquake swarm until the eruption (day 1 and 2) (June 12)
Read also : Air traffic disruption and the aid of NASA HD satellite images (day 3, 4 and 5) (June 23)
Read also : Impressive new NASA pictures (June 30)
Read also : 31 people killed at the Ethiopian side – thousands more need aid (July eight)
Read also : Seismic activity continues below Nabro (September 14)
Nabro is an Eritrean volcano with NO historic eruption record. Earthquake-Report.com was one of the first publishers in the world detecting and describing this unexpected eruption. Our very extensive reports were also the work of our many readers who gave a lot of input.
Update 02-07-2012 at 16:35 UTC
- The best seismological agency to follow up Nabro volcano has been and still is Djibouti’s Observatoire Géophisque Arta. This agency has a number of seismographs installed at a relatively close distance to this volcano. It took a while until these were updated, but the data came in today.
- Time 16:19:12 UTC – Depth 8 km – Magnitude Ml4.9
- The location of the epicenter has not been reported in coordinates, but Arta has located it to the north-east of Nabro and below another small volcano (we could not trace the name of it)
- Additionally Arta seems to use an old google map which does not show yet the magma flows of the latest eruption, which makes it difficult to compare coordinates
Update 18:32 UTC
As far as we could see on this afternoon weather and Modis satellite images, NO eruption has taken place. Certainly to be followed closely the following days.
Update 18:14 UTC
EMSC has decreased the initial depth to a new shallow 5 km, but due to the error margins even this new value will not be very accurate. We hope to receive the normally very accurate Djibouti data later today.
The border area in between Eritrea and Ethiopia is an absolute NO GO zone controlled by the army. A lot of people were killed when the volcano erupted on June 12 2011. The erupted was detected by a M5.1 earthquake.
Update 01-07-2012 at 17:35 UTC
We have just received a USGS Notification of a new M4.8 earthquake in the immediate vicinity of the Nabro volcano. M4.8 is a very strong earthquake for volcanic circumstances. A new eruption cannot be excluded but we will have to wait until satellite images and SO2 satellite pictures are available and this can take a couple of hours.
The reported depths and epicenters have a too big error margin and can’t be trusted at this point
Live feed from the Eritrean earthquakes
|EMSC||Near The Coast Of Eritrea||Jul 01 16:19 PM||4.8||10||MAP I Felt It|
|USGS||Eritrea - Ethiopia Region||Jul 01 16:19 PM||4.8||10||MAP I Felt It|
|EMSC||Eritrea - Ethiopia Region||Mar 20 19:34 PM||3.7||2||MAP I Felt It|
|EMSC||Eritrea - Ethiopia Region||Mar 12 01:30 AM||3.7||1||MAP I Felt It|
|EMSC||Eritrea - Ethiopia Region||Mar 03 04:47 AM||3.1||1||MAP I Felt It|
|James Daniell CATDAT||Eritrea, Ethiopia||Jun 17 07:00 AM||5.6||10||MAP I Felt It|
|James Daniell CATDAT||Eritrea, Ethiopia||Jun 12 07:00 AM||5.7||10||MAP I Felt It|
|James Daniell CATDAT||Djibouti, Somalia, Eritrea||Jan 04 08:00 AM||5.8||33||MAP I Felt It|
|James Daniell CATDAT||Eritrea||Sep 21 08:00 AM||5.7||10||MAP I Felt It|
|James Daniell CATDAT||Ethiopia And Eritrea||Aug 14 08:00 AM||5.9||10||MAP I Felt It|
|James Daniell CATDAT||Eritrea||Sep 23 08:00 AM||5.8||10||MAP I Felt It|
|James Daniell CATDAT||Eritrea||Feb 27 08:00 AM||5.7||10||MAP I Felt It|
Satellite imagery suggests that the eruption of Nabro Volcano, which began in June 2011, continues. The volcano is located on the edge of the Danakil Desert, a remote and sparsely populated area on the border between Eritrea and Ethiopia, and few eyewitness accounts of the eruption are available. Orbiting instruments such as the Advanced Land Imager (ALI) aboard Earth Observing-1 (EO-1), which acquired these images, may be the only reliable way to monitor Nabro.
The images show the volcano in false-color (first) and natural-color (lower second) on September 28, 2011. Heat from vents in Nabro’s central crater is visible as a red glow in the false-color image. Another hotspot about 1,300 meters (4,600 feet) south of the vents reveals an active lava flow. A pale halo surrounding the vents indicates the presence of a tenuous volcanic plume. South of Nabro’s crater, the dark, nearly black areas are coated with ash so thick it completely covers the sparse vegetation. On either side of this region is a thinner layer of ash with some bright green vegetation (exaggerated in false-color) poking through.
download large image (405 KB, JPEG)
In the natural-color image, the arid landscape is light brown where it is not covered by ash. The ash is black, while a fresh lava flow, spewed out in the last two weeks of June, is dark brown. More fresh lava flows surround the active vents. On either side of Nabro’s caldera, ephemeral streams have washed away the ash, leaving light-colored channels behind—a first sign of the erosion that will reshape, and eventually remove, what the eruption built.
download large image (2 MB, JPEG)
Text and images : NASA Earth Observatory