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Very shallow M6.6 earthquake hits Ogasawara region, Japan
A very shallow earthquake registered by the JMA as M6.6 hit Japanese Ogasawara Archipelago at 18:22 UTC (03:22 JST) on August 16, 2018. The USGS is reporting M6.4 at a depth of 11.5 km (7.1 miles) at 18:21 and M6.0 at 18:22 UTC. EMSC is reporting M6.4 and M5.9 at a depth of 10 km (6.2 miles). According to the USGS, the epicenter was located 251 km (156 miles) SE of Iwo Jima, 420.9 km (261.5 miles) SSW of Ogasawara, Japan and 945.4 km (587.5 miles) NNW of Saipan, Northen Mariana Islands. There are no people living within 100 km (62 miles). Although there may be slight sea-level changes in coastal regions, this earthquake has caused no damage to Japan, JMA said. The closest volcanoes are Minami-Hiyoshi and Nikko, both submarine. They have located roughly 100 km (62 miles) W of the epicenter. Periodic water discoloration and water-spouting have been reported over Minami-Hiyoshi since 1975 when detonations and an explosion were als…

Sinkhole opens into giant, 20-foot high cave under Texas neighborhood


WILLIAMSON COUNTY, Texas - Texas environmental consultants were busy exploring a 170-foot long cave that was found after a portion of a residential street in a Williamson County neighborhood north of Austin collapsed earlier in the week.
The cave stretches eastward from the site of a sinkhole, located in a neighborhood in the Brushy Creek area. The height at some points of the cave reaches 22 feet, with an average height of 10 to 15 feet, according to a county news release.
The county said structural engineers will explore the site to help determine the cave’s stability.
They’ll also decide how to repair the sinkhole, which could take several weeks as the assessments and repairs take place.
The Brushy Creek area and Cedar Park are hosts to several caves, including a cave near the Brushy Creek greenbelt that is home to bats.

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