'Our method specializes in measuring large earthquakes through their long-period energy tens of thousands of seconds post-quake,' explained, Xinyu Jiang, lead author of the study and a doctoral student with the study team. The team published their findings in Earthquake Science. The pair of earthquakes also appear to be the most powerful doublet ever to occur on land. This corresponds to one of the largest tremors in over 2,000 years of Turkish history.'įurthermore, the researchers found that the two large earthquakes were rare large continental earthquake doublets-two or more large earthquakes occurring in close proximity and at short time intervals-as such events occasionally occur in subduction zones and rarely on the continent. 'The first mainshock was slightly stronger than the second with an estimated difference of 0.11. 'The moment magnitudes obtained were 7.95 and 7.86, higher than the other published results,' shared Prof Song, who is the corresponding of the paper. Currently, reported magnitude results for the two events have significant discrepancies, and the difference in magnitude between them is highly uncertain (between 0.1 and 0.4), which requires further revisions.Īiming to address that gap, a team of researchers led by Professor Xiaodong Song of Peking University used a novel and reliable long-period coda moment magnitude method to measure the magnitudes and relative sizes of the two events.

For the damaged coda meaning