Geologists advise against wind turbines in Meckenheim and Rheinbach

Geologists advise against wind turbines in Meckenheim and Rheinbach

  Wind turbines are said to be rotating in this field between Flerzheim and Meckenheim.  They may interfere with seismometer measurements.
Wind turbines are supposed to turn on this field between Flerzheim and Meckenheim. They may interfere with seismometer measurements. Photo: Matthias Kehrein

Meckenheim / Rheinbach The earthquake measuring station in Todenfeld could prevent the construction of the wind farm between Meckenheim and Rheinbach. Three wind turbines are to be built there.

Mario Quadt

By Mario Quadt

Editor VorgebirgeFollow Mario Quadt

At 10:34 a.m. on March 21, the earth shook on the left bank of the Rhine. The epicenter was south of Meckenheim and Rheinbach at a depth of about eight kilometers. The pointers of the seismometers at the earthquake station in Todenfeld struck out and documented the tremors on their rotating rollers. GA readers reported that the quake was slightly noticeable with a magnitude of 2.1 on the Richter scale.

The station of the Geological Service NRW, which is inconspicuous from the outside, takes center stage not only during such natural events, but also during the debate about the construction of three wind turbines in the intermunicipal wind farm between the two cities. The legal situation is clear: In order not to disrupt the work of the sensitive measuring devices in the 14 earthquake stations across the country, geologists advise that no wind turbines may be built within a radius of ten kilometers.

Rotors generate vibrations,

 that spread in the ground

Disruptive for seismographs: geologists advise against wind turbines in Meckenheim and Rheinbach
Photo: graphic

But that’s not all: “The recommendation is given to forego the erection of wind turbines within a radius of 17.5 kilometers around the measuring system,” write Wolfgang Friederich from the Ruhr University Bochum and Klaus Stammler from the Seismological Central Observatory in Hanover 2013 in a scientific statement on the construction of wind turbines in Germany.https://b78de07899f856b5cdeaa40b8e8faaa3.safeframe.googlesyndication.com/safeframe/1-0-37/html/container.html

The Todenfelder earthquake station is about eight kilometers from the so-called concentration zone for wind turbines in the north of Meckenheim. “The movement of the rotor causes wind turbines to generate considerable vibrations that spread in the ground in the form of elastic waves,” the geology professor and physicist explain in their report. “Although these vibrations decrease with distance, they are nevertheless strong enough at a distance of a few kilometers to disturb the measurements of the ground movement.” of the cities of Meckenheim and Rheinbach have already pointed out

“We think that earthquake protection is also in the public interest,” says Ingrid Koston, spokeswoman for BI, in an interview with the GA. 22 families are currently involved in the initiative – mostly residents of the sunny side of the new building area. You speak out against the construction of wind turbines in the concentration zone. Especially with regard to the observation of current volcanic activities around the Laacher See, the seismometers are important for civil protection. “This warning instrument should not be taken from the population,” says Koston.<font style=”box-sizing: border-box; vertical-align: inherit; background-repeat: no-repeat; background-position: center center; max-width: 100%;”><font style=”box-sizing: border-box; vertical-align: inherit; background-repeat: no-repeat; background-position: center center; max-width: 100%;”> &lt;div id = “mobilebanner_3″&gt; &lt;/div&gt; &lt;script&gt; (function () {var init = function init () {if (! window.park ||! window.park.googlePublisherTag ||! window.park.googlePublisherTag .isReady ||! window.park.googlePublisherTag.isReady () ||! window.park.googlePublisherTag.initAndDisplaySlot) {window.setTimeout (init, 100); return;} window.setTimeout (function () {window.park. googlePublisherTag.initAndDisplaySlot (“mobilebanner_3″);}, 100);}; init ();}) (); &lt;/script&gt; </font></font><font style=”box-sizing: border-box; vertical-align: inherit; background-repeat: no-repeat; background-position: center center; max-width: 100%;”><font style=”box-sizing: border-box; vertical-align: inherit; background-repeat: no-repeat; background-position: center center; max-width: 100%;”> &lt;div id = “contentad”&gt; &lt;/div&gt; &lt;script&gt; (function () {var init = function init () {if (! window.park ||! window.park.googlePublisherTag ||! window.park.googlePublisherTag .isReady ||! window.park.googlePublisherTag.isReady () ||! window.park.googlePublisherTag.initAndDisplaySlot) {window.setTimeout (init, 100); return;} window.setTimeout (function () {window.park. googlePublisherTag.initAndDisplaySlot (“contentad”);}, 100);}; init ();}) (); &lt;/script&gt; </font></font>

In order to make wind energy possible on more areas in the future, the NRW Energy Agency has commissioned a research project. The private company, founded in 1990, works on behalf of the state on questions of renewable energies or climate protection. The study is about how the disruptive effects of wind turbines on seismological stations can be reduced. “So far, such a procedure does not exist, so that the uncertainty regarding the situation is an obstacle to the further expansion of wind energy in North Rhine-Westphalia,” explains the energy agency at the start of the three-year project in June 2018. Results should be available next year.

Earthquakes and wind turbines

 send the same signals

The Geological Service, as one of the operators of earthquake stations in North Rhine-Westphalia, advocates not installing wind turbines in the immediate vicinity of the stations. “Natural earthquakes and wind turbines send signals in the same frequency band,” says Sebastian Busch from the geophysics department, state earthquake service of the Geological Service in North Rhine-Westphalia. Technically it is not possible to filter out the influence of the wind turbines from the registered data of the earthquake stations. “Attempts are currently being made to minimize the influence of wind turbines on seismological stations by means of distance regulations,” says the geophysicist.<font style=”box-sizing: border-box; vertical-align: inherit; background-repeat: no-repeat; background-position: center center; max-width: 100%;”><font style=”box-sizing: border-box; vertical-align: inherit; background-repeat: no-repeat; background-position: center center; max-width: 100%;”> &lt;div id = “mobilebanner_4″&gt; &lt;/div&gt; &lt;script&gt; (function () {var init = function init () {if (! window.park ||! window.park.googlePublisherTag ||! window.park.googlePublisherTag .isReady ||! window.park.googlePublisherTag.isReady () ||! window.park.googlePublisherTag.initAndDisplaySlot) {window.setTimeout (init, 100); return;} window.setTimeout (function () {window.park. googlePublisherTag.initAndDisplaySlot (“mobilebanner_4″);}, 100);}; init ();}) (); &lt;/script&gt; </font></font><font style=”box-sizing: border-box; vertical-align: inherit; background-repeat: no-repeat; background-position: center center; max-width: 100%;”><font style=”box-sizing: border-box; vertical-align: inherit; background-repeat: no-repeat; background-position: center center; max-width: 100%;”> &lt;div id = “contentad_2″&gt; &lt;/div&gt; &lt;script&gt; (function () {var init = function init () {if (! window.park ||! window.park.googlePublisherTag ||! window.park.googlePublisherTag .isReady ||! window.park.googlePublisherTag.isReady () ||! window.park.googlePublisherTag.initAndDisplaySlot) {window.setTimeout (init, 100); return;} window.setTimeout (function () {window.park. googlePublisherTag.initAndDisplaySlot (“contentad_2”);}, 100);}; init ();}) (); &lt;/script&gt; </font></font>

In its statement on the study, the state association for renewable energies (LEE) NRW suggests “not using an exclusion radius”. The statement ends with the conclusion that the association’s proposals are suitable for making more wind turbines possible in the country. “In view of the currently low availability of space for wind turbines and the lengthy approval process, this procedure could be a step on the way to realizing the wind energy expansion corridor of 10.5 gigawatts by the year 2030, as indicated by the state government in the energy supply strategy,” said the LEE .

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