Posts: 10,165
Threads: 343
Joined: Apr 2009
Royall - there's no such thing as an earthquake occurring at a depth of -0.1 miles - it would mean the earthquake occurred above the surface (the surface being 0). However, determining the depth can be difficult and the error bars quite large. So, with an automated system, the error bar could be larger than the actual depth and the computer spits out -0.1. It's similar to a rounding error. Over time, you may see this get corrected by a human (if they have the time!).
PS. And yes, the closer to the surface the more likely you are to feel it.
Posts: 10,989
Threads: 749
Joined: Sep 2012
a depth of -0.1 miles
I noticed a number of quakes listed at that depth over the past few days.
I thought, wait, what's that? An airquake?
Portion of Hawaii’s drinking water that comes from underground wells : 9/10
Gallons of raw sewage that leak into the ground from Hawaii cesspools each day : 53,000,000 - Harper's Index
"I'm at that stage in life where I stay out of discussions. Even if you say 1+1=5, you're right - have fun." - Keanu Reeves
Posts: 241
Threads: 15
Joined: May 2007
No damage so far. 6.9 is the same as the Loma Prieta quake that killed 69 people in the Bay Area! I was in the basement of a seven story hospital within sight of Loma Prieta Peak.
Posts: 10,165
Threads: 343
Joined: Apr 2009
Royall, HOTPE, just found this web page that explains it:
https://www.usgs.gov/faqs/what-does-it-m...e_products
Posts: 151
Threads: 12
Joined: Jun 2009
quote:
Originally posted by dan d
Anyone know power outage area besides 15 th hpp?
Dan D
HPP
some friends on 5th near Macau have no power
Posts: 1,070
Threads: 9
Joined: Mar 2014
Air quake seems like thunder but alas TomK and Royall gave us a better understanding of our lack of knowledge in which we are for ever grateful.The hard drive between the ears always has more room for facts and knowledge.
Mrs.Mimosa
Posts: 2,898
Threads: 488
Joined: Mar 2006
Power is back on 5th and Makuu. I called Helco and it sounds like multiple power outages in Hilo and Puna. I can't get any OTA TV stations except PBS.
Posts: 10,989
Threads: 749
Joined: Sep 2012
Thanks TomK!
Portion of Hawaii’s drinking water that comes from underground wells : 9/10
Gallons of raw sewage that leak into the ground from Hawaii cesspools each day : 53,000,000 - Harper's Index
"I'm at that stage in life where I stay out of discussions. Even if you say 1+1=5, you're right - have fun." - Keanu Reeves
Posts: 7,727
Threads: 684
Joined: Jun 2011
Looks like we've had about 50 earthquakes since the 6.9.... hasn't been 2 hours yet.
Posts: 761
Threads: 40
Joined: Nov 2014
quote:
Originally posted by macuu222
I can't get any OTA TV stations except PBS.
No worries, the local stations are all showing Judge Judy and the Price is Right etc. You'd think somebody would cover this. Thank God for Punaweb.
