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SINGAPORE (Reuters) - A shallow earthquake of magnitude 6 struck northeast of Australia’s Norfolk Island on Thursday, the United States Geological Survey said.
There was no immediate tsunami warning and no reports of damage or casualties from the quake, which hit at a depth of 10 km (6 miles), about 681 km (423 miles) northeast of Norfolk Island.
Reporting by Clarence Fernandez; Editing by Darren Schuettler
The 2010–2014.3 global earthquake rate increase
Tom Parsons 1 and Eric L. Geist 1
1 U. S. Geological Survey, Menlo Park, California, USA
...
1. Introduction
Obvious increases in the global rate of large (M ≥ 7.0) earthquakes happened after 1992, 2010, and especially during the first quarter of 2014 (Table 1 and Figure 1). Given these high rates, along with suggestions that damaging earthquakes may be causatively linked at global distance [e.g., Gomberg and Bodin, 1994; Pollitz et al., 1998; Tzanis and Makropoulos, 2002; Bufe and Perkins, 2005; Gonzalez-Huizar et al., 2012; Pollitz et al., 2012, 2014], we investigate whether there is a significant departure from a random process underlying these rate changes. Recent studies have demonstrated that M ≥ 7.0 earthquakes (and also tsunamis) that occurred since 1900 follow a Poisson process [e.g., Michael, 2011; Geist and Parsons, 2011; Daub et al., 2012; Shearer and Stark, 2012; Parsons and Geist, 2012; Ben-Naim et al., 2013]. Here we focus on the period since 2010, which has M ≥ 7.0 rates increased by 65% and M ≥ 5.0 rates up 32% compared with the 1979 – present average. The first quarter of 2014 experienced more than double the average M ≥ 7.0 rate, enough to intrigue the news media [e.g., www.nbcnews.com...]. We extend our analysis to M ≥ 5.0 levels, as many of these lower magnitude events convey significant hazard, and global catalogs have not generally been tested down to these thresholds.
2. Methods and Data
We work with the Advanced National Seismic System (ANSS) catalog of M≥ 5.0 global earthquakes for the period between 1979 and 2014.3 with a primary focus on the recent interval between 2010 and 2014.3 that shows the highest earthquake rates (Table 1 and Figure 1). A variety of tests suggest that the catalog is complete down to magnitudes between M=4.6 and M=5.2, depending on the method used to assess it (see supporting information). We examine a range of lower magnitude thresholds above M =5.0 to account for this uncertainty.
...
originally posted by: MinangATS
Don't be so dramatic.
It is there, M 6.6 - 192km ESE of Tadine, New Caledonia
2018-12-05 06:43:04 (UTC)
originally posted by: MinangATS
Don't be so dramatic.
It is there, M 6.6 - 192km ESE of Tadine, New Caledonia
2018-12-05 06:43:04 (UTC)
Quake of magnitude 6 strikes northeast of Australia’s Norfolk Island: USGS
December 6, 2018 - by Reuters News
SINGAPORE (Reuters) – A shallow earthquake of magnitude 6 struck northeast of Australia’s Norfolk Island on Thursday, the United States Geological Survey said.
There was no immediate tsunami warning and no reports of damage or casualties from the quake, which hit at a depth of 10 km (6 miles), about 681 km (423 miles) northeast of Norfolk Island.
(Reporting by Clarence Fernandez; Editing by Darren Schuettler)
Magnitude Mw 6.7
Region SOUTHEAST OF LOYALTY ISLANDS
Date time 2018-12-05 06:43:08.9 UTC
Location 21.84 S ; 169.75 E
Depth 10 km
Distances 343 km E of Nouméa, New Caledonia / pop: 93,100 / local time: 17:43:08.9 2018-12-05
258 km S of Isangel, Vanuatu / pop: 1,500 / local time: 17:43:08.9 2018-12-05
196 km E of Tadine, New Caledonia / pop: 7,500 / local time: 17:43:08.9 2018-12-05
F-E Region: Southeast of Loyalty Islands
Mw Beach Ball
Time: 2018-12-05 06:43:08.1 UTC
Magnitude: 6.5 (Mw)
Epicenter: 169.72°E 21.90°S Geohack coords
Depth: 10 km
Status: C - confirmed
originally posted by: hopenotfeariswhatweneed
a reply to: ElectricUniverse
What do you think is the purpose of erasing information about quakes, and why only a couple here and there, what do you think they are hiding?
A strong increase in the number of global earthquakes is noted since 2010 that appears to have accelerated during the first quarter of 2014. However, there is no evidence that this increase represents a departure from temporally independent earthquake occurrence, as many of these earthquakes are local aftershocks of prior events. While some studies have concluded that specific large earthquakes have had a significant impact on global M ≥ 5.0 seismicity since 2010, we cannot find a strong signal associated with global M ≥ 7.0 earthquakes that rises above the random fluctuations that are observed between regular 48 h periods; the largest rate increases we see are not associated with global main shocks (Figure 2). This is quantified here at the M ≥ 5.6 level because a temporally independent Poisson process governing the distribution of these earthquakes cannot be ruled out at 95% confidence, even with a wide range of local declustering and binning parameters. If M ≥ 7.0 earthquakes have significant global influence on other moderate to large events (M ≥ 5.6), then the catalog should be overdispersed well outside local aftershock zones. We do note apparent dependent clustering below this magnitude threshold that cannot be explained by local aftershocks or swarms.
originally posted by: Chadwickus
a reply to: ElectricUniverse
Took me literally 2 seconds to find the paper.
agupubs.onlinelibrary.wiley.com...
But I guess that if you did want to link to it, you wouldn’t because USGS shills would then read the conclusion....
A strong increase in the number of global earthquakes is noted since 2010 that appears to have accelerated during the first quarter of 2014. However, there is no evidence that this increase represents a departure from temporally independent earthquake occurrence, as many of these earthquakes are local aftershocks of prior events. While some studies have concluded that specific large earthquakes have had a significant impact on global M ≥ 5.0 seismicity since 2010, we cannot find a strong signal associated with global M ≥ 7.0 earthquakes that rises above the random fluctuations that are observed between regular 48 h periods; the largest rate increases we see are not associated with global main shocks (Figure 2). This is quantified here at the M ≥ 5.6 level because a temporally independent Poisson process governing the distribution of these earthquakes cannot be ruled out at 95% confidence, even with a wide range of local declustering and binning parameters. If M ≥ 7.0 earthquakes have significant global influence on other moderate to large events (M ≥ 5.6), then the catalog should be overdispersed well outside local aftershock zones. We do note apparent dependent clustering below this magnitude threshold that cannot be explained by local aftershocks or swarms.
...
Here we focus on the period since 2010, which has M ≥ 7.0 rates increased by 65% and M ≥ 5.0 rates up 32% compared with the 1979–present average. The first quarter of 2014 experienced more than double the average M ≥ 7.0 rate, enough to intrigue the news media [e.g., www.nbcnews.com...‐earthquakes‐illusion‐raises‐new‐questions‐n85826]. We extend our analysis to M ≥ 5.0 levels, as many of these lower magnitude events convey significant hazard, and global catalogs have not generally been tested down to these thresholds.
...
A strong increase in the number of global earthquakes is noted since 2010 that appears to have accelerated during the first quarter of 2014. However, there is no evidence that this increase represents a departure from temporally independent earthquake occurrence, as many of these earthquakes are local aftershocks of prior events.
...
originally posted by: Chadwickus
a reply to: ElectricUniverse
OMG they said INCREASE!
All the other words around it like “no evidence” just disappear huh?