19990628 CTY Sonne 03 Dr. Peter Herring shows off a black Dragonfish. This deep sea fish, less than a foot long was found a 1000 meters deep, might communicate with luminous patches on cheeks. Sonne, a research vessel, tied up at pier 2 in Honolulu, Hawaii. photo by Craig T. Kojima

The scientists reported some spectacular findings yesterday, displaying ancient volcanic rocks and strange-looking creatures with big eyes collected from the deep sea.

Using a sophisticated side-beam sonar system covering a 10-mile swath of the ocean bottom, the geophysicists and geologists made the first detailed maps of the Musician Seamounts. YouTube facts you didn’t know

Besides seamounts, the Musician chain has a new class of volcano discovered only recently, the scientists said. The chain has elongated ridges two miles high, five miles across and up to 300 miles long.

“You see some things like this on Venus and the moon,” said Jason Morgan, with the GEOMAR Research Center for Marine Geosciences at Kiel University. But until recently, he said, “People thought such features were unique to other planets.”

See alsoChinese students cramming for exam

Pan, who works with professor Rodey Batiza in the UH Department of Geology and Geophysics, said he believes the Musician Seamounts were formed at a hot spot in Earth’s mantle. But he thinks the ridges are the result of impact between the hot spot and mid-ocean spreading center.

Ernst Flueh, chief scientist for the cruise, said the new type of volcano has been found in about 10 sites around the world. One of the big questions is whether the ridges were formed from a single eruption or a mixing of material from Earth’s plate motions, he said.

See alsoThe sawfish

Seismic studies by the SONNE indicate much of the magma erupted at the surface and only a small fraction was deposited in the deeper crust, he said.

Morgan speculated that the magma oozed from from a feeder dike, or giant crack, and spread out on the surface, and the volcano was built by flows one on top of each other.

His father, geophysicist Jason Morgan of Princeton University, said seismic experiments and the aging of the rocks will help them determine the structure of the volcanoes.

The biologists also have some mysteries to unravel, particularly why many animals in the deep, dark sea have large eyes, said Peter Herring, marine biologist at the Southhampton Oceanographic Center in England.

“It’s paradoxical.”

See alsoLamprey Fish

They also see and communicate by making their own light (bioluminescence) from pigments along their bodies, he said.

“We have a whole bunch of new species to compare with Atlantic ones,” Herring said. “Some we’ve never seen before.”

The biologists used special equipment to maintain dark, cold conditions for the animals when they brought them up from the sea, and took the creatures into a dark room for study.

Besides big eyes, the fish have very big teeth, Herring pointed out, explaining that because they don’t get a meal often they must not miss one.

See alsoChinese man sue wife for being ugly

More UH scientists will be doing research on the SONNE in the future, he said. One of the world’s most advanced research ships, it is supported by the German Ministry for Education, Research and Technology.

Source