Two French rivers disappear underground in large cracks and sinkholes
The Doubs river flows normally in Franche-Comté, France. But since about a week or so, the river has totally dried up over a length of more than 1 km, between Pontarlier and Morteau, although precipitation has been abundant this winter and spring. The river has disappeared, and with it, the fauna and flora. Everything is dead. Two weeks ago, 13km of the Risle River in Normandy also disappeared underground in a large crater. According to geologists, this unprecedented event is due to large cracks and craters in the riverbed.
The cave of Remonot is located near the village of Morteau along the Doubs. Dedicated to the Virgin Mary, this Chapel-Cave contains miraculous water and is visited each year on August 15, 2018, the day of the Assumption. But during this year’s annual pilgrimage, the cave was dry! The first time ever! Nearby, the Doubs river is also dry. No water, just pebbles, and dead fish. Residents explain they …

Alerts raised for Cleveland volcano after detection of small lava flow, Alaska

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The Alaska Volcano Observatory has raised the Aviation Color Code for Cleveland volcano from Yellow to Orange on June 26, 2018, after detection of small lava flow inside summit crater. The last detected explosive activity at Cleveland volcano occurred May 5, 2018. 
Satellite observations of Cleveland volcano on June 25, 2018, indicate the presence of a small circular lava flow, about 80 meters (262 feet) in diameter, covering the floor of the summit crater, the Alaska Volcano Observatory (AVO) reported June 26 at 21:45 UTC.
Geophysical monitoring data from Cleveland Volcano has been unavailable since early afternoon, June 25 and thus it is unknown if the effusion of lava within the crater generated detectable seismicity or infrasound.
However, the presence of a lava flow over the active vent increases the possibility of a vent clearing explosion over the coming days to weeks and thus AVO raised the Aviation Color Code and Volcano Alert Level to ORANGE/WATCH. 
Cleveland Volcano, Central Aleutians. View from the West. Photo taken during the 2015 field season of the Islands of Four Mountains multidisciplinary project, work funded by the National Science Foundation, the AVO/USGS, and the Keck Geology Consortium
Occasional, short duration explosive activity with minimal to no precursory signals is common at the volcano, the observatory said, adding that explosions may occur without warning.
Explosions at Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours. However, more significant ash emissions may occur as they have in the past.
Alerts raised for Cleveland volcano after detection of small lava flow, Alaska
Cleveland volcano is monitored by only two seismic stations, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.

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