July 22: History Uncovered As Other Historical Places Covered

July 22, 2018. Posted by USGS on Facebook: “A telephoto view into the fissure 8 cinder cone, taken during the early morning helicopter overflight.”
Today’s Eruption Summary

Status quo. No significant overflows today from Fissure 8’s lava river. USGS morning overflight put the southern margin of the coastal flow field at 500 m from boat ramp at Isaac Hale Park. In other words, not much movement in that direction.

Summit collapse occurred while I was writing up this post, as expected:  8:54 pm HST, back to an energy equivalent of M5.3 on reviewing readings, they upped this one to 5.5! Let’s see whether that results in an early-morning Fissure 8 surge tomorrow, er, today, Monday.

July 22, 2018. USGS: “The main ocean entry, as observed early this morning, was located a few hundred meters (yards) northeast of the southern flow margin, which remains about 500 m (0.3 mi) from the boat ramp at the Isaac Hale Park.” (Full-sized)

When the National Park opens again, they’re going to have a new— or rather, very old— landmark that I confess I’m rather excited about, although it’s not quite as photogenic as a lava lake. Mark Twain would’ve seen this during his visit in 1866:

July 22, 2018. USGS: “Collapse of Kīlauea’s caldera floor has exposed South Sulphur Bank, prominent in the mid-19th century but covered as lava flows filled the caldera. The flat top of the white deposit shows how high the caldera fill reached. As the caldera floor dropped in mid-June 2018, South Sulphur Bank was again exposed. The height of the bank, now more than 65 m (213 ft), increases about 2.5 m (9 ft) with each collapse event at Kīlauea’s summit. On the caldera floor, white patches lie along spatter ramparts formed in 1971 and 1974.” (Full-sized)

As we approach the 3-month mark, the USGS is beginning to supplement its daily reports on the eruption itself with recognition of scientists and support crew who have been working 24/7 to monitor, collect scientific data and inform civil defense and the public since this eruption began. The drone crew worked overtime last night after being grounded by weather then night before:

July 22, 2018. USGS: “The Unmanned Aircraft Systems (UAS) team frequently works into the night, flying aircraft (also referred to as drones) that hover over the active lava channel to collect data and look for changes, such as significant channel overflows. The moon (bright white area above the UAS team scientist) is partially obscured by clouds.” (Full-sized)

Two maps today, one assembled from yesterday morning’s overflights and one from 2 o’clock this afternoon:

Continue reading July 22: History Uncovered As Other Historical Places Covered