Soru

When Dr. Sandra Chen first documented the anomalous growth patterns in the ancient cedars of the Pacific Northwest, she was a newly minted graduate student in 1998, focused on climate variability. It was not until six years later, while comparing her dendrochronological data with historical Japanese harbor logs from the Edo period, that the chronological puzzle of the Cascadia subduction zone began to resolve. The Japanese records described an unexplained 'orphan tsunami' that had devastated coastal villages, a mystery that had long puzzled historians because no local earthquake had preceded it. Chen realized that the cedar rings showed a sudden growth halt in the spring of 1700, aligning precisely with the January 1700 harbor logs. Although her synthesis offered an elegant explanation, her colleagues initially greeted the hypothesis with profound skepticism. This academic resistance persisted until 2012, when marine geologist Kenji Sato retrieved deep-sea sediment cores that confirmed massive underwater landslides dating to that exact winter, providing the physical evidence needed to validate Chen’s timeline.

According to the passage, which of the following events occurred after Chen compared her tree-ring data with historical Japanese records but before Sato gathered deep-sea sediment cores?