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Valdivia earthquake revision or maybe deletion

15,589
10,502

No source at all. The AP links to freaking Earthquakealabama site. Ik a profile that seems to scale from it too. Can we please figure this out? Is there some other source for this?
All I found thus far is this post right here without any proper info on who is the guy who made this or how exactly, and even then it only puts it at 7-B.
 
yeah but what kinda friggin profile links you to a calculator?
I get the intention. You have this in the profile:
The most powerful earthquake ever recorded with a moment magnitude 9.4–9.6
All you need to do is put that in the calculator and you'll get the listed results in the page.
 
We usually have scientific studies or statements from official sources. This one has neither
If its just the study then the page links to Wikipedia which links to this
1960 Chile: Too Soon for Its Size

The year 1960 belongs to a bygone era in earthquake and tsunami studies. It predates the recognition of plate tectonics, the installation of the world-wide standardized seismographic network system, the computer simulation of tsunami generation and propagation, and the establishment of international tsunami warning systems. Today’s still-meager understanding of the giant 1960 Chile earthquake—of its size, tectonics, and tsunami generation—accordingly took decades to achieve. This understanding, as outlined below, now includes recognition that the earthquake’s predecessors varied greatly in size, and that approximately 300 years elapsed, on average, between the largest of these earthquakes in the past 2000 years .The giant 1960 Chile earthquake culminated a series of fault displacements that began 29h earlier, with a foreshock of Mw 8.1 (Cifuentes 1989). The series also included a slow earthquake ∼15 min before the mainshock. This puzzling precursor, which may account for a belt of uplift inland from the mainshock’s coseismic subsidence (Linde & Silver 1989), had nearly as much seismic moment as did the mainshock(Kanamori & Cipar 1974, Kanamori & Anderson 1975, Cifuentes & Silver 1989).The combined seismic moment of the slow precursor and the mainshock has been estimated as 4–6 × 10^23 Nm.

The mainshock itself has a range of estimated sizes. Kanamori (1977) used 2 × 10^23 Nm as an average estimate of seismic moment; the corresponding moment magnitude of 9.5 has become the widely accepted number. However, the seismic moments estimated from free oscillations and strain seismograms span the range 1–3 × 10^23 Nm, equivalent to Mw 9.4–9.6 (Kanamori & Cipar 1974, Kanamori &Anderson 1975, Cifuentes 1989, Cifuentes & Silver 1989). This range implies average slip between about 20 and 30 m if the rupture length (estimated from aftershockdistribution) is close to 900 km and the rupture width is between about 60 and 290 km(Cifuentes 1989). However, as judged from land-level changes inferred to have accompanied the mainshock (Plafker & Savage 1970), the seismic moment is less than1 × 10^23 Nm, either with uniform slip of 17 m on a 850 km × 130 km wide fault, o rwith variable slip as great as 40 m (Barrientos & Ward 1990).
The only change being made would be like
Attack Potency: Large Mountain level to Large Mountain level+ radiated seismic energy (Studies of the event places the Moment Magnitude of the earthquake at 9.4-9.6, which is approximately to 7.94–15.85 exajoules), Country level to Country level+ total seismic moment energy (A 9.4-9.6 Earthquake would yield approximately 155.23–309.74 zettajoules)
 
If its just the study then the page links to Wikipedia which links to this

The only change being made would be like
I don't see how? Studies put it there sure but what I meant was literally studies that have the energy output.

We also have the same situation with other earthquakes on the site and seemingly only earthquakes. Why are the profiles DIY all of a sudden?
 
Studies put it there sure but what I meant was literally studies that have the energy output.
They gave us the energy output. Moment magnitude is a direct way to calculate the energy of seismic movements.
 
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