Yen currency exchange remains strong despite Japan nuclear tragedy

Japan yen currency exchange remains surprisingly strong despite the recent Japan tsunami-earthquake and nuclear tragedy according to Bloomberg.
Barclays Capital even halted the trading of the yen against dollar because of the Japan currency exchange surge to a record high as of yesterday. The Japan yen rose to as high as 76.36 per dollar at 5:21 p.m. in New York yesterday, and Japan’s currency closed at 78.89, according data Bloomberg data.
However Chris Towner, director of FX advisory services, said that the trading environment in the foreign exchange markets has been stable,and added that currency exchange is in contrast to stock market.
The reasons for the stability of the yen's currency exchange rate are the fact that the insurance market in-flows into the Japanese yen to meet the huge claims from the Japan tsunami tragedy. Another reason is the vast reconstruction of large multi-national companies in order to start re-building.
But the Japan tsunami rebuilding efforts is foreseen to be stalled due to the alarming nuclear calamity that engulf the Japan northeast region. The US dollar and the Japan yen are among the leading currency that influence other currency exchange rates.