He drew parallels with the 1984 Games in Los Angeles in which there were concerns "about how many Olympic athletes were going to die because of the smog," and a Zika virus outbreak prior to the 2016 Games in Rio de Janeiro.
Elsewhere, the Australian and New Zealand dollars eased slightly as the Antipodeans struggled to break through heavy technical resistance, but sentiment remains positive due to rising commodity prices, some traders said.
"We're going to see volatility definitely over the next couple of months" given uncertainty over the path of growth, Kristen Bitterly, of Citi Private Bank, told Bloomberg TV.
"Our industry is on course to suffer annihilating damage, just with people's concerns about a possible radioactive contamination of marine products," it said in a statement.
"We look forward to the opportunity to lay out in very clear terms to our Chinese counterparts some of the concerns that we have about the actions they're taking," said Blinken.
U.S. Secretary of State Antony Blinken warned China on Tuesday against using “coercion and aggression” as he sought to use his first trip abroad to shore up Asian alliances in the face of growing assertiveness by Beijing.
China’s extensive territorial claims in the East and South China Seas have become a priority issue in an increasingly testy Sino-U.S. relationship and are an important security concern for Japan.
Sony fell 3.89 percent to 11,120 yen. Tokyo Electron, the world's third-largest producer of tools to produce semiconductors, fell 4.70 percent to 43,550 yen.
The agency said the quake was centered about 37 miles beneath the ocean bed.
It is interesting to note that today's quake occurred in almost the same location as the catastrophic Tohoku earthquake from 11 March 2011. In fact, it is likely a late aftershock.