Live data from Hacker News

Kilauea volcano errupts, lava more than 1k feet high [video]

youtube.com

41–50 of 51 posts

Re: Kilauea volcano errupts, lava more than 1k feet high [video]

#41
post #9

Earlier quoted context omitted.

For those downvoting: As measured from the planetary surface(=sea floor in this case), as opposed to sea level

I've always thought that it seems like a silly way to measure it.. Everest also goes to the sea floor, technically.

So I’m not supposed to measure it from my belly button? ..,

But really, is there a “highest point on earth”? That takes into account all the variations of land. Would it work if earth isn’t a perfect sphere?

Re: Kilauea volcano errupts, lava more than 1k feet high [video]

#42
post #2

YT link is live video. USGS info: https://www.usgs.gov/volcanoes/kilauea Timeline: https://www.usgs.gov/volcanoes/kilauea/volcano-updates/volca...

Money shot: https://www.youtube.com/watch?v=24GcMK020Ao Three weeks ago: https://www.youtube.com/watch?v=Db9qvUWYgcQ

Plume over 20k ft??

Uhh what the heck is a plume anyway?

Re: Kilauea volcano errupts, lava more than 1k feet high [video]

#43

Earlier quoted context omitted.

Everything is silly, and consensus reality on these kind of things is just a glorified Reddit thread IRL. There's at least four plausible metrics. Everest is tallest from the local mean sea level (the smoothed gravitational equipotential—what a stationary water surface hugs); McKinley-Denali from its local terrain base; Mauna Kea from the local terrain base inclusive of underwater terrain; and Chimborazo, in equatori…

Enjoyed your clear description but I don't know that framing it as some kind of hive mind group think issue is that accurate. It's just taxonomy and ontology, it's ok to have different taxonomies for different contexts. The same issue exists for everything. planets, temperature, oceans, species..

What is being called hive mind, that used to be called cargo cult, is a real thing on HN, though.

There’s this fantasy that there are a bunch of geniuses that can adequately cover any topic here and that discussion will be inclusive and enlightening, but, no, it’s just a frustrating cauldron of wannabes and bad info that periodically hit upon things.

Re: Kilauea volcano errupts, lava more than 1k feet high [video]

#44

Earlier quoted context omitted.

Money shot: https://www.youtube.com/watch?v=24GcMK020Ao Three weeks ago: https://www.youtube.com/watch?v=Db9qvUWYgcQ

Plume over 20k ft?? Uhh what the heck is a plume anyway?

Ash and gas: the "smoke"

Re: Kilauea volcano errupts, lava more than 1k feet high [video]

#46
post #16

Earlier quoted context omitted.

How does the rain avoid the desert areas?

It's a "rain shadow"[0] The predominant wind is from the east, and the air cools aid forms rainclouds as it tries to rise over the mountains in the center of the island. Then warms again as it descends down the eastern slopes. So the eastern (Hilo) side is pretty lush jungle, and the west(Kona) is desert. With snowy mountains in between. [0] https://www.climate.gov/news-features/featured-images/rain-s...

It's interesting to see the transition. Lush green grass and vegetation on your left, and as you turn your head right, it goes more yellow and then completely dry desert on your right.

It's almost like you can see the line across the terrain.

Re: Kilauea volcano errupts, lava more than 1k feet high [video]

#47
post #37

Earlier quoted context omitted.

You must be thinking of a different island. Hawaii, the Big Island is big. 93 miles long, 76 miles wide. Maui has a narrow waist (an isthmus connecting two volcanos), 6 miles across.

This description still applies to Big Island (if we stretch it a bit): > You can drive less than an hour and go from desert to snow and snow to tropical. You can drive from the beach on the leeward side, going past dry ranchland with an average annual rainfall of ~10-15" (similar to arid West Texas places like Midland), to the Mauna Kea Observatory, where snow can sometimes be found, in under an hour and a half; and…

We did a tour to Mauna Kea and watched the sunset from above the cloud layer. It was spectacular.

And as you say, snow, whereas we'd been on the beach just a couple of hours before. Guide didn't drive straight up due to acclimatization and I still got slightly dizzy up there, it's over 4200m (13800 ft) up there after all.

While the Big Island is certainly much larger than the other Hawaiian islands, it's not huge. We did day trips covering about a third of the island, including multiple tourist-y stops. And yea the nature there kept surprising us again and again.

Re: Kilauea volcano errupts, lava more than 1k feet high [video]

#48

Earlier quoted context omitted.

I've always thought that it seems like a silly way to measure it.. Everest also goes to the sea floor, technically.

Everything is silly, and consensus reality on these kind of things is just a glorified Reddit thread IRL. There's at least four plausible metrics. Everest is tallest from the local mean sea level (the smoothed gravitational equipotential—what a stationary water surface hugs); McKinley-Denali from its local terrain base; Mauna Kea from the local terrain base inclusive of underwater terrain; and Chimborazo, in equatori…

Humans measuring stuff and getting pedantic is a sport for the ages.

Re: Kilauea volcano errupts, lava more than 1k feet high [video]

#50

Earlier quoted context omitted.

I've always thought that it seems like a silly way to measure it.. Everest also goes to the sea floor, technically.

Everything is silly, and consensus reality on these kind of things is just a glorified Reddit thread IRL. There's at least four plausible metrics. Everest is tallest from the local mean sea level (the smoothed gravitational equipotential—what a stationary water surface hugs); McKinley-Denali from its local terrain base; Mauna Kea from the local terrain base inclusive of underwater terrain; and Chimborazo, in equatori…

Following up on your pedantism: Chimborazo isn't in Ecuador because it's equatorial, but rather, it's equatorial because it's in Ecuador.

(Or, perhaps, because it lies near or on the equator.)

There are non-Ecuadorian equatorial locations.

:-)

(I do like, appreciate, and was previously aware of the various claims to "highest mountain". Interesting also to contemplate that the early Rockies, and perhaps Appalachian mountains (themselves older than dirt, literally), may once have exceeded thirty thousand feet (approaching 10,000 m). Though the Rockies figure might be an ambitious reading of the Teton Fault having experienced 20,000 -- 30,000 feet of vertical displacement. This is possible without peaks reaching such heights, given erosion. Estimates of the original height of the Appalachians is even more tenuous and indirect.)

Post reply on HN