Nerdettes weblog

Just another view of/by nerdette.org

A M3.6 earthquake near Darmstadt: It’s getting boring

And yet another earthquake near Darmstadt, Germany, a Magnitude 3.6 (average)


And how it looked like on the scales:

At least, that’s what a few of the reports say. What surprised me most were the differences in magnitudes being reported though.

Here’s what the different stations and websites report (corrections not included):

M3.4 Landesamt für Geologie und Bergbau Rheinland-Pfalz – Erdbebendienst Südwest
M3.4 Volcano Discovery
M3.4 LGRB Baden-Württemberg Erdbebendienst Südwest
M3.6 Earthquake Report
M3.6 Seismologische Zentralobservatorium (SZGRF)
M3.7 European-Mediterranean Seismological Centre (EMSC)

Strangely enough nothing on USGS so I reported it there.

Quake Description:
While sitting at the table with 3 people; all of a sudden the windows started to tremble, the ones to the east at first, it seemed to come from that direction. The table vibrated together with the whole house. A noise was heard, the same as before: like a massive truck filled with sand drove on a cobblestone street underneath. Unlike the last one this was a big ‘wave’ at once; without much before or after. Other reports had said that it has been shaking for a minute, but that wasn’t the case here. Nothing fell over, trembling visible in glass with liquid and everyone reacted to it. Strangely enough it felt a lot stronger than the 3.2 last time, because the time to reach the ‘trembling peak’ was shorter.
Date/Time: 2014.10.29 / October 29th 2014, 18:24 local time (17:24CET)
Initially guessed Magnitude: 3.2
Distance to epicenter: about 7.5 km.
Damage: More cracks in the walls..

The local news reports can be found here

Meanwhile, on twitter: 2nd tweet on the twitter-timeline referring to #darmstadt and #erdbeben which later got trending.

Further reports:
29.Oktober: Zweitstärkstes Erdbeben des Jahres erschüttert Raum Darmstadt – Leichte Schäden in Nieder-Beerbach via @LukasRentz

OP Online: “Erdbeben in Südhessen erschreckt Bürger”
Darmstädter Tagblatt: “Erdbeben bei Eberstadt – “Hat ganz schön gewackelt”"
FAZ – Frankfurter Allgemeine Zeitung : “Wieder Erdbeben in Südhessen”
Echo Online: “Erdbeben mit Stärke von 3,7 erschüttert Südhessen”
hr-online: “Knall, Erschütterung, schwingender Boden” via @hronline
FFH Regional: “Erdbeben in Darmstadt” via @FFHRegional
Morgenweb : “Südhessen: Bürger wegen Erdbeben verunsichert”
focus.de: “Erde in Südhessen bebt wieder: Wände wackeln, Gläser klirren”

And here are some old posts about previous earthquakes near Darmstadt:

* Earthquake near Darmstadt, March 30th (M3.2),
* Earthquake near Darmstadt, May 17th (M4.1)
* Earthquake near Darmstadt, June 8th 2014 (M3.3)
* Earthquake near Darmstadt, September 19th 2014 (M2.6)
* Earthquake near Darmstadt, October 29th 2014 (M3.6)

Also:

More earthquakes around Darmstadt, Hesse, Germany to expect? Yes.

Earthquakes in Darmstadt, Hesse, Germany and all over the world

Earthquake scales (adjusted) in Germany, Europe

Felsenmeer in Flammen: A natural spectacle with music and lasershow

And another spectacular show was brought on air tonight, including fireworks and very good music.
This years’ theme was “A trip around the world” – with music with accents from several places; like Brazil, New York, China.

My favorite:

Felsenmeer in Flammen 2014: Crystallize – Lindsey Stirling (Dubstep Violin Original Song) @ YouTube
Not sure what country she represents though as she’s as American as New York. But I loved the great combination of Dubstep and the lasershow, one of the very best I’ve seen since we started visiting the Felsenmeer in Flames :)












And of course fireworks as well:

Bárðarbunga, an Icelandic volcano: links and live data

    Websites with links and live data:

* Data: Weerstation Langerak
* Data: 3D earthquake map
* Webcams: Live from Iceland
* Webcams: Webcam collection
* Info/Data: Institute of Earth Sciences
* Info/Data: IJsland enzo (earthquakes)
* Info/Data: Icelandic Meteorologiscal Office
* Info/Data: Follow the seismic and volcanic activity near Bárðarbunga
* Info/Background: Daily KOS – News/Community/Action (and great backgrounds with humor)
* Info/Background: The Reykjavik Grapevine Your essential guide to life, travel and entertainment in Iceland

    Recommended Twitter accounts to follow:

* John A Stevenson@volcan01010 & website
Postdoc geologist tweeting mainly volcanoes, Iceland, GIS/maps & open source science software. Into climbing, mountain-biking, exploring, music. Husband, dad.

* Dave McGarvie@subglacial & website
Volcanologist working in Iceland and Chile. Scottish. Explorer, mountain biker, photographer, malt whisky fan. Works for The Open University. Opinions my own.

* Gisli Olafsson@gislio
Emergency Response Director – NetHope. Former ICE-SAR Team Leader. UNDAC Member. Author of The Crisis Leader

* University of Iceland@uni_iceland
Iceland · english.hi.is

* Cambridge University@Cambridge_Uni
News and Events from the University of Cambridge

* Almannavarnir@almannavarnir
The National Commissioner Of The Icelandic Police, Department of Civil Protection and Emergency Management

* John Seach@johnseach
Volcano adventurer, filmmaker, and scientist.

    Bots and funny fakes:

* @Bardarbunga
I am an Icelandic stratovolcano located under the ice cap of Vatnajökull glacier, rising to 2,009 m (6,591 feet) above sea level. And I`m starting to wake up.

* @icequakes
Earthquakes from Iceland.

* @Bardarbunga_IS
Bárðarbunga volcano is an Icelandic subglacial stratovolcano located under the ice cap of Vatnajökull glacier, rising to 2,009 metres (6,591 ft).

* @icevolcanoes
Auto-retweeting news about Icelandic volcanoes from the people we follow – enjoy!

Bardarbunga livecam
20140923 bardarbunga

Bardarbunga livecam closeup
20140923 bardarbunga

Source: www.livefromiceland.is


Today’s manually processed earthquakes.


Automatic recorded earthquakes from today.


All earthquakes since it all started mid August 2014.
Source: vedur.is


Icecover from Bardarbunga sinking in the past 3 days, including earthquakes for comparison


Icecover from Bardarbunga sinking from past 11 days, including earthquakes for comparison

    Pronunciation guide

(from dailykos):

Bárðarbunga: BOWR-dthar-Boon-ka
Dyngjujökull: DING-yih-YUH-kih-tl
Krafla: CROP-lah
Askja: AWSK-yah
Austfirðir: OYST-fear-dthear
Jökulhlaup: YUH-kihl-HLOYP
Eyjafjallajökull: AY-uh-fyat-luh-YOE-kuutl-uh

Earthquake scales (adjusted) in Germany, Europe

As you might have noticed, the earthquakes are increasing here in Germany. Every time I left an “I felt it!” remark to the agencies that investigate earthquakes there are a bunch of descriptions that you’re being asked. However, the comparisons to the current earthquake scale descriptions didn’t really match with what they felt like.

My guess was these earthquake scales are like they are because they mainly happen somewhere else.
And somewhere else they’ve got different houses, different buildings, different building styles, different building materials as well as a different ground structure; so basically it was difficult to compare.

Via juskiserdbeben I found a more “Europeanized” earthquake scale, which makes a lot more sense in this area. With “freundlicher Genehmigung” I’ve translated the European earthquake measurement scale in English:

european earthquake magnitude scale
Click to enlarge

And yet another earthquake at Darmstadt: M2.6

Although we had a short discussion what it exactly was, I kind of knew it was yet another one and guessed it was around M2.5

Then, on Twitter, the first reactions and discussions, some people nearby didn’t feel it, some did.

Also at work some people were aware of it, some weren’t. Only a few recognized it as an earthquake, and that were also the ones I’d discussed the increase of earthquakes nearby with. Most people didn’t notice, a few remembered they had heard a big bang or a rumble, but didn’t feel it.

After a while the first reports come out:

map via Landesamt für Geologie und Bergbau Rheinland Pfalz:

20140919 Earthquake map Darmstadt, Germany

First indication (now updated) via EMSC-CSEM : M 2.5 – GERMANY – 2014-09-19 11:11:47 UTC
Magnitude M 2.6
Region GERMANY
Date time 2014-09-19 11:11:47.9 UTC
Location 50.04 N ; 8.62 E
Depth 10 km

Report from Landesamt für Geologie, Rohstoffe und Bergbau Baden-Württemberg :

Erdbebenmeldung

ERDBEBEN BEI : Darmstadt−West/Germany
DATUM/UHRZEIT : am 19.09.2014 um 13:11 MESZ
STÄRKE : 2.5 (Magnitude auf der Richter−Skala)
EPIZENTRUM : 49 Grad 53 Minuten Nord und 8 Grad 35 Minuten Ost
HERDTIEFE : nicht ermittelt
Diese Meldung wurde automatisch erstellt und ist noch nicht überprüft.
Die Nachricht wurde erstellt am 19.09.2014 um 13:17 MESZ.

Which shows a nice graph:

Earthquake Erdbeben Darmstadt 19. September 2014

Source parameters provided by:
Landsamt für Geologie, Rohstoffe und Bergbau — Baden Wuerttemberg, Germany (LED)

This time pretty much the same as last times:
A short, 3 second quickly louder becoming low rumble, then the building had a fierce trembling. Chair vibrated along. Other people in same room also noticed but discussed if this was from a construction area nearby.

Interestingly enough, after a discussion with a colleague about the earth being clearly in move these days, I made a little graph of the recent local earthquakes around Darmstadt, then zooming in on the recent ones. The numbers are a bit scary, as well as the graph:

Earthquake history darmstadt

So, when I wrote my blog More earthquakes around Darmstadt, Hesse, Germany to expect? Yes I guess I was assuming right. Not sure if this is going to be a fun ride though.

See also
* Earthquake near Darmstadt, March 30th (3.2M),
* Earthquake near Darmstadt, May 17th (4.1M)
* Earthquake near Darmstadt, June 8th 2014 (3.3M)

* Earthquakes in Darmstadt, Hesse, Germany and all over the world, >a href=”http://blog.nerdette.org/?p=1811″ title=”Earthquakes in Darmstadt, Hesse, Germany and all over the world” target=”_blank>Earthquakes in Darmstadt, Hesse, Germany and all over the world