Tsunami in Japan last March broke the iceberg in Antarctica. Combined size of all fragments reach two times the City of Manhattan, the United States.
Researchers from NASA successfully detect tsunami waves as far as Japan moves 13,600 kilometers. These waves reach the south polar region 18 hours after the tsunami in Japan. The wave height is only 30 centimeters was made ??from iceberg iceberg separate Sulzberger.
In addition to waves, ice in Antarctica is also expected to have a relationship with seismic activity. When the earthquake and tsunami struck, the vibrations arising enough to create cracks in the ice of Antarctica.
According to historical records, ice Sulzberger has never moved from his place for 46 years. Only after the Japanese until the tsunami struck, Sulzberger move. "In the past, there are events like this, but we are still looking for its source. Now we know the earthquake and tsunami were Japanese, one of the biggest events in history, could be the cause," explained the specialist cryosphere, Kelly Brunt.
After the tsunami happened, Brunt helped Emile Okal of Northwestern University and Douglas of the University of Cicago Macayeal directly examine the shards of ice floating in the ocean using satellites. After a closer look with the help of the European Space Agency radar satellite (Envisat), found two icebergs, one of which is estimated at City of Manhattan.
"This is an example of how events on Earth are connected to each other, although with very long distances. It also explains how the seemingly unrelated system was very concerned," said MacAyeal.
Sumber :
National Geographic Indonesia
0 comments:
Post a Comment