Wednesday was a nice day for an up and down hike to the lake

A day at the lake can be an adventure particularly when there are occasional eruptions and intense emissions of gas.

The trip was not to just any lake. The goal Wednesday was to take scientific measurements of the crater lake at the Turrialba volcano.

No swimming, though. The pH of the water turned out to be 2, which is similar to the juice of fresh lemons but not as acidic as battery acid.

Taking the measurements were four scientists, Jairo García of the Red Sismológica Nacional and Julian Reizer, Geoffroy Avard and María Martinez of the Observatorio Vulcanológico y Sismológico de Costa Rica.

The Red Sismológica reported that the lake water was 49 degrees C, about 120 F, and the apertures that were emitting gas were 200 degrees C or about 392 F.

The team collected water samples for laboratory analysis.  García reported on the Red Sismológica Facebook page that during the visit the scientists witnessed small eruptions.

The mountain is under close observation.  Scientists from the  Observatorio took a flight over the volcano Monday. They

reported that for the first time they were able to capture and analyze samples of the volcano gas in the air. Much of the volcano’s emissions is water vapor. But the scientists did find carbon dioxide and sulphur dioxide as well as hydrogen sulfide, the gas with the rotten egg smell.

By studying the gas, the scientists said that they could determine that the gas came from magma and not mixed with the water vapor. They also said that between 7 and 9 a.m. they were able to determine that the plume of gas was being carried northwest.

To get to the lake, the trip is up and then down.

To get to the lake, the trip is up and then down.

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