{"id":20272,"date":"2020-12-21T18:20:07","date_gmt":"2020-12-21T17:20:07","guid":{"rendered":"https:\/\/www.ig.cas.cz\/?page_id=20272"},"modified":"2021-02-03T12:42:20","modified_gmt":"2021-02-03T11:42:20","slug":"local-seismic-network-reykjanet","status":"publish","type":"page","link":"https:\/\/www.ig.cas.cz\/en\/observatories\/local-seismic-network-reykjanet\/","title":{"rendered":"Local seismic network REYKJANET"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;3.22&#8243; custom_padding=&#8221;20px|0px|57.9125px|0px&#8221;][et_pb_row column_structure=&#8221;2_3,1_3&#8243; _builder_version=&#8221;3.25&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; custom_padding=&#8221;0px|0px|28.95px|0px&#8221;][et_pb_column type=&#8221;2_3&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_text _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<h3>REYKJANET network<\/h3>\n<p>Seismic network REYKJANET has been established on Reykjanes Peninsula in 2013 under the project P210\/12\/2336, to obtain data from dense seismic local network. The network is operated by the Institute of Geophysics and Institute of Rock Structure and Mechanics of the CAS. the network was substantially upgraded in 2016 &#8211; short-period seismometers were replaced by broadband ones. The network consists of 15 stations covering an area of 60 km x 20 km. The stations are equipped by Guralp CMG 3ESPC (eigenperiod T0=30s), which are buried in containers on concrete pillars coupled with bedrock and Nanometrics Centaur digitizers. All stations record continuously with sampling frequency of 250 Hz. Because the stations are deployed in inhabited and remote places, they are powered by batteries recharged by solar panels and wind generators. The maintenance of the network is supported by <a href=\"http:\/\/www.geothermal.is\/\">Iceland Geosurvey<\/a> (\u00cdSOR) in the terms of Memorandum of undertanding between the institutions. The measured data (around 185 GB\/year) are stored in safe data storage. REYKJANET is the only local seismic network of the Czech Academy of Sciences operated abroad (similar project is the regional Czech-Greek network <a href=\"http:\/\/seismo.geology.upatras.gr\/heliplots\/\">PSLNET<\/a>operated by the Faculty of Mathematics and Physics of the Charles University and University of Patras).<\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_image src=&#8221;https:\/\/www.ig.cas.cz\/wp-content\/uploads\/2018\/01\/ss_ge.png&#8221; align_tablet=&#8221;center&#8221; align_phone=&#8221;&#8221; align_last_edited=&#8221;on|desktop&#8221; _builder_version=&#8221;3.23&#8243; custom_padding=&#8221;|||&#8221;]&nbsp;<br \/>\n[\/et_pb_image][et_pb_text _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<p style=\"text-align: center;\">Red line marks the Reykjanes Peninsula on south-west Iceland with the REYKJANET network<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;3.25&#8243;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_code _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<style><!-- [et_pb_line_break_holder] -->.transparent-tooltip {<!-- [et_pb_line_break_holder] -->  background: none;<!-- [et_pb_line_break_holder] -->  border:none;<!-- [et_pb_line_break_holder] -->  box-shadow: none;<!-- [et_pb_line_break_holder] -->  font-weight: bold;\t <!-- [et_pb_line_break_holder] -->}<!-- [et_pb_line_break_holder] --><\/style>\n<p><!-- [et_pb_line_break_holder] --><\/p>\n<div id=\"map\" style=\"width:100%; height:500px\"><\/div>\n<p><!-- [et_pb_line_break_holder] --><script><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->var locations = [<!-- [et_pb_line_break_holder] -->  [\"Afstapahraun\", 63.9871, -22.136, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/afstapahraun\/\", \"ASH\"],<!-- [et_pb_line_break_holder] -->  [\"Elborg\", 63.8582, -21.9872, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/elborg\/\", \"ELB\"],<!-- [et_pb_line_break_holder] -->  [\"Fagradalsfjall\", 63.9064, -22.2148, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/fagradalsfjall\/\", \"FAF\"],<!-- [et_pb_line_break_holder] -->  [\"Geitafell\", 63.94814, -21.53067, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/geitafell\/\", \"GEI\"],<!-- [et_pb_line_break_holder] -->  [\"Herd\u00edsarv\u00edk\", 63.86992, -21.8839, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/herdisarvik\/\", \"HDV\"],<!-- [et_pb_line_break_holder] -->  [\"Hr\u00fatagj\u00e1\", 63.96069, -21.9779, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/hrutagja\/\", \"HRG\"],<!-- [et_pb_line_break_holder] -->  [\"Isolfsskali\", 63.8629, -22.3029, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/isolfsskali\/\", \"ISS\"],<!-- [et_pb_line_break_holder] -->  [\"Kleifarvatn\", 63.9112, -21.9582, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/kleifarvatn\/\", \"KLV\"],<!-- [et_pb_line_break_holder] -->  [\"Littla Sk\u00f3garfell\", 63.9222, -22.3722, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/skogarfell\/\", \"LSF\"],<!-- [et_pb_line_break_holder] -->  [\"L\u00e1tur\", 63.8582, -22.1869, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/latur\/\", \"LAT\"],<!-- [et_pb_line_break_holder] -->  [\"L\u00e1gar\", 63.90515, -22.4888, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/lagar\/\", \"LAG\"],<!-- [et_pb_line_break_holder] -->  [\"M\u00f3h\u00e1lsadalur\", 63.91995, -22.05954, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/mohalsadalur\/\", \"MOH\"],<!-- [et_pb_line_break_holder] -->  [\"Selalda\", 63.8434, -22.1112, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/selalda\/\", \"SEA\"],<!-- [et_pb_line_break_holder] -->  [\"Stran\u00f0arheidi\", 63.98632, -22.26519, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/strandarheidi\/\", \"STH\"],<!-- [et_pb_line_break_holder] -->  [\"Langahl\u00ed\u00f0\", 63.97915, -21.83195, \"https:\/\/www.ig.cas.cz\/vyzkum-a-vyuka\/observatore\/lokalni-seismicka-sit-reykjanet\/langahlid\/\", \"LHL\"]<!-- [et_pb_line_break_holder] -->];<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->\tvar map = L.map('map').setView([63.94, -21.77], 10);<!-- [et_pb_line_break_holder] -->\tmapLink = '<a href=\"http:\/\/openstreetmap.org\">OpenStreetMap<\/a>';<!-- [et_pb_line_break_holder] -->\tL.tileLayer(<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->\t\t'http:\/\/{s}.tile.openstreetmap.org\/{z}\/{x}\/{y}.png', {<!-- [et_pb_line_break_holder] -->\t\tmaxZoom: 18,<!-- [et_pb_line_break_holder] -->\t\tattribution: '\u00a9 ' + mapLink + ' Contributors',\t<!-- [et_pb_line_break_holder] -->\t}).addTo(map);<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->var greenIcon = L.icon({ \/\/add this new icon<!-- [et_pb_line_break_holder] -->                iconUrl: '\/wp-content\/uploads\/2021\/02\/reykja.png',<!-- [et_pb_line_break_holder] -->                iconSize:     [25, 25], \/\/ size of the icon<!-- [et_pb_line_break_holder] -->            });\t<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->for (var i = 0; i < locations.length; i++) {<!-- [et_pb_line_break_holder] --> var marker = new L.marker([locations[i][1], locations[i][2]], {<!-- [et_pb_line_break_holder] -->                win_url: locations[i][3],<!-- [et_pb_line_break_holder] -->\t\ttitle: locations[i][0],<!-- [et_pb_line_break_holder] -->\t\ticon: greenIcon,<!-- [et_pb_line_break_holder] -->            }); <!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->marker.bindTooltip(locations[i][4], { permanent: true, offset: [0, 1], direction: 'bottom', className: 'transparent-tooltip' });\t<!-- [et_pb_line_break_holder] -->    marker.addTo(map);<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->marker.on('click', function() {<!-- [et_pb_line_break_holder] -->                window.location = (this.options.win_url);<!-- [et_pb_line_break_holder] -->                });  <!-- [et_pb_line_break_holder] -->}<!-- [et_pb_line_break_holder] --><\/script>[\/et_pb_code][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;2_3,1_3&#8243; _builder_version=&#8221;3.25&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221;][et_pb_column type=&#8221;2_3&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_text _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<h3>Reykjanes Peninsula, south-west Iceland<\/h3>\n<p>Iceland is one of the most significant geodynamic areas of the world. It is the only part of the Mid-Atlantic Ridge (the boundary between North-American and Eurasian tectonic plate) above the sea level. Iceland represent the unique opportunity to observe and study phenomena of the diverging tectonic plates. A&nbsp;65 km long rift zone goes through the whole Reykjanes Peninsula (roughly from 63,8\u00b0 to 61,1\u00b0N and from 21,5\u00b0 to 22,3\u00b0 W). Sharp mountain ridges and valleys are stretching from south-west to north-easy and the whole rift zone is extending around 20 mm\/year in west-east direction and about 5 mm\/year in north-south direction.<\/p>\n<p>Reykjanes penninsula is the most seismically active region in terms of number of earthquakes, although mostly on micro-earthquake level with local magnitudes ML &lt; 3.0 (usually several events per day) and seismic swarms which reach higher magnitudes than those in West Bohemia. The most significant seismic swarms occurred in 2000 (maximum magnitude ML =5,9), in 2003 (ML =5,3), in 2013 (ML =5,0) in 2017 (ML =4,2 ) and 2020 (ML=5.6). Shallow location of foci suggest that under the boundary around 8 km depth the rock become ductile and the brittle rupture cannot occur and therefore there are generated no earthquakes. This should correspond to a&nbsp;temperature over 600\u00b0C (average temperature of Earth at such depths is around 200\u00b0C). Whole peninsula is covered by lava fields. Last magmatic activity took place around 1000 years ago. Last eruption is documented in 1240 when whole volcanic system of Reykjanes was active. The Reykjanes Peninsula is highly complex geodynamic area where volcanic and earthquake activities interact. We observe crustal fluid activity demonstrated by fumaroles, moffettes and geothermal fields with surface temperature up to 100\u00b0C. Geothermal energy is important source of energy for whole Iceland (geothermal power plant on west of Reykjanes launched in 2006 produces 100MW).<\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_image src=&#8221;https:\/\/www.ig.cas.cz\/wp-content\/uploads\/2018\/01\/usgs_rift.gif&#8221; alt=&#8221;Nazna\u010den\u00ed tektonick\u00e9 situace (zdroj: web Americk\u00e9 geologick\u00e9 slu\u017eby usgs.gov)&#8221; title_text=&#8221;Nazna\u010den\u00ed tektonick\u00e9 situace (zdroj: web Americk\u00e9 geologick\u00e9 slu\u017eby usgs.gov)&#8221; align=&#8221;center&#8221; align_tablet=&#8221;center&#8221; align_phone=&#8221;&#8221; align_last_edited=&#8221;on|desktop&#8221; _builder_version=&#8221;4.6.0&#8243;]&nbsp;<br \/>\n[\/et_pb_image][et_pb_text _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<p style=\"text-align: center;\">Tectonic situation (source: webpage usgs.gov)<\/p>\n<p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/www.ig.cas.cz\/wp-content\/uploads\/2018\/01\/22095272_10209912616801294_1798565332_o-1.jpg&#8221; align=&#8221;center&#8221; align_tablet=&#8221;center&#8221; align_phone=&#8221;&#8221; align_last_edited=&#8221;on|desktop&#8221; _builder_version=&#8221;3.23&#8243; max_width=&#8221;91%&#8221;]&nbsp;<br \/>\n[\/et_pb_image][et_pb_text _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<p style=\"text-align: center;\">Bridge between continents in Sandv\u00edk on Reykjanes &#8211; on one side European tectonic plate, on the other North-American tectonic plate<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_4,1_4,1_4,1_4&#8243; _builder_version=&#8221;3.25&#8243;][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_image src=&#8221;https:\/\/www.ig.cas.cz\/wp-content\/uploads\/2018\/01\/fumarola.jpg&#8221; align_tablet=&#8221;center&#8221; align_phone=&#8221;&#8221; align_last_edited=&#8221;on|desktop&#8221; _builder_version=&#8221;4.6.0&#8243;]&nbsp;<br \/>\n[\/et_pb_image][et_pb_text _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<p style=\"text-align: center;\">Hverahl\u00edd &#8211; geothermal field Kr\u00fdsuv\u00edk<\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_image src=&#8221;https:\/\/www.ig.cas.cz\/wp-content\/uploads\/2018\/01\/ASH.jpg&#8221; align_tablet=&#8221;center&#8221; align_phone=&#8221;&#8221; align_last_edited=&#8221;on|desktop&#8221; _builder_version=&#8221;3.23&#8243;]&nbsp;<br \/>\n[\/et_pb_image][et_pb_text _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<p style=\"text-align: center;\">Station Afstapahraun (code ASH)<\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_image src=&#8221;https:\/\/www.ig.cas.cz\/wp-content\/uploads\/2018\/01\/haeta.jpg&#8221; align_tablet=&#8221;center&#8221; align_phone=&#8221;&#8221; align_last_edited=&#8221;on|desktop&#8221; _builder_version=&#8221;3.23&#8243;]&nbsp;<br \/>\n[\/et_pb_image][et_pb_text _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<p style=\"text-align: center;\">Geothermal area Gunnuhver<\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_image src=&#8221;https:\/\/www.ig.cas.cz\/wp-content\/uploads\/2018\/01\/elekt2-e1515619081715.png&#8221; align_tablet=&#8221;center&#8221; align_phone=&#8221;&#8221; align_last_edited=&#8221;on|desktop&#8221; _builder_version=&#8221;3.23&#8243;]&nbsp;<br \/>\n[\/et_pb_image][et_pb_text _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<p style=\"text-align: center;\">Geothermal area Gunnuhver, geothermal power plant in the back\u00a0<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;3.25&#8243;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_image src=&#8221;https:\/\/www.ig.cas.cz\/wp-content\/uploads\/2018\/01\/kleifarASH.png&#8221; align_tablet=&#8221;center&#8221; align_phone=&#8221;&#8221; align_last_edited=&#8221;on|desktop&#8221; _builder_version=&#8221;3.23&#8243;]&nbsp;<br \/>\n[\/et_pb_image][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_image src=&#8221;https:\/\/www.ig.cas.cz\/wp-content\/uploads\/2018\/01\/baudarMOH.png&#8221; align_tablet=&#8221;center&#8221; align_phone=&#8221;&#8221; align_last_edited=&#8221;on|desktop&#8221; _builder_version=&#8221;3.23&#8243;]&nbsp;<br \/>\n[\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;3.25&#8243;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_text _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<p style=\"text-align: center;\">Three-component velocity record of local earthquake of magnitude ML=1.6 at ASH station from 29.5.2015 (from top to bottom: vertical component Z, north-south component NS, east-west component EW)<\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;3.25&#8243; custom_padding=&#8221;|||&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_text _builder_version=&#8221;4.6.0&#8243;]<\/p>\n<p style=\"text-align: center;\">Three-component velocity record of regional earthquake of magnitude ML=5.0 at MOH station from 24.8.2014 (from top to bottom: vertical component Z, north-south component NS, east-west component EW). The earthquake occurred 200km away preceding B\u00e1r\u00f0arbunga volcano eruption.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>REYKJANET network Seismic network REYKJANET has been established on Reykjanes Peninsula in 2013 under the project P210\/12\/2336, to obtain data from dense seismic local network. The network is operated by the Institute of Geophysics and Institute of Rock Structure and Mechanics of the CAS. the network was substantially upgraded in 2016 &#8211; short-period seismometers were [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":14269,"parent":392,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-20272","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Local seismic network REYKJANET - Geofyzik\u00e1ln\u00ed \u00fastav Akademie v\u011bd \u010cR, v.v.i.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ig.cas.cz\/en\/observatories\/local-seismic-network-reykjanet\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Local seismic network REYKJANET - Geofyzik\u00e1ln\u00ed \u00fastav Akademie v\u011bd \u010cR, v.v.i.\" \/>\n<meta property=\"og:description\" content=\"REYKJANET network Seismic network REYKJANET has been established on Reykjanes Peninsula in 2013 under the project P210\/12\/2336, to obtain data from dense seismic local network. 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