During a entire lunar occultation , the trace of the Earth slowly covers the Moon . When it is completely embrace , the Moon acquires a trenchant red coloring due to sunlight that filter through our planet ’s atmosphere . Over 1,000 years ago , however , European perceiver report a completely dark lunar eclipse .
A new work by an outside squad of research worker suggests inScientific Reportsthat a series of volcanic eruptions expel enough sulfur compound into the stratosphere to darken the sky between 1108 and 1110 CE .
There are several pieces of grounds to support this version . The first is the front of sulphate in ice cores from Greenland . And not just any old deposit , but the large deposit of the last millennium . This distinct St. Mark was previously attribute to Icelandic vent Hekla that break through in 1104 , but over the last X research worker have worked out thatthe ice coredateswere slightly off , moving the deposit to 1108 .
Another hint that Hekla was not responsible for the down payment was the discovery of a similar respectable deposition of sulfates in Antarctica . For this rationality , the team surmise that a vent confining to the tropic is the result .
To research this idea further , the squad blend data from the trash cores with diachronic accounts from around the world . Between 1109 and 1111 CE , there are reports of famine across Western Europe tie to dramatic change in conditions . ThePeterborough Chroniclereports of a dark total lunar occultation in May 1110 . These facts match well with the level reveal in the ice kernel .
Not only that but the team see a report of an eruption from Mount Asama , the most alive vent in Honshū on the primary island of Japan . Its eruption in 1108 was thelargest knownfor this exceptional vent .
A statesmandescribes the 1108 eventas such : " There was a flaming at the top of the vent , a thick layer of ash tree in the regulator ’s garden , everywhere the fields and the Sir Tim Rice fields are rendered unfit for finish . We never go through that in the country . It is a very strange and rarefied thing . "
The team are not certain that Mount Asama alone is creditworthy for the disconsolate lunar eclipse , but they are confident that it played a part and that the novel geological dating of the ice substance is correct .
