The tooth morphology as apparent after eruption is the idealised status, deviations of which, if not caries or trauma, are diagnosed as (erosive) tooth wear.
Thus, the apparent decline in eruption numbers prior to about 11 ka may be caused by a sampling bias.
On November 2 , 1958 the Russian astronomer Nikolai A. Kozyrev observed an apparent half-hour "eruption" that took place on the central peak of Alphonsus crater using a 48-inch (122-cm) reflector telescope equipped with a spectrometer.
There is another new book about that eruption, "No Apparent Danger: The True Story of Volcanic Disaster at Galeras and Nevado Del Ruiz" (HarperCollins) by Victoria Bruce.
Even though the difference in elevation between the vents on Mauna Loa and Kilauea was only 2,000 metres (6,600 feet), there was no apparent effect of one eruption upon the other.
d Photograph taken from Miyagino at about 23:00 on July 1 shows no apparent plume above the eruption center.
A few hundred yards away, in Spitalfields, more than ten thousand medieval remains were dug up between 1990 and 2007, the apparent victims of a volcanic eruption, in 1258, that disrupted the climate and harvests.
It is difficult to set constraints on the size distribution of the aggregate of the Ontake eruption; however, the apparent size distribution of the falling particles must be better sorted in a spreading plume.
"This difficulty is very apparent when you compare the last two eruptions in Iceland - Eyjafjallajokull in 2010 and Grimsvotn in 2011.
