{"id":3521,"date":"2024-04-18T11:16:16","date_gmt":"2024-04-18T11:16:16","guid":{"rendered":"https:\/\/traveladic.com\/?p=3521"},"modified":"2026-02-10T16:37:47","modified_gmt":"2026-02-10T16:37:47","slug":"que-son-les-aurores-boreals","status":"publish","type":"post","link":"https:\/\/traveladic.com\/ca\/que-son-les-aurores-boreals\/","title":{"rendered":"Qu\u00e8 s\u00f3n les aurores boreals?"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>\u00cdndex<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#que-son\">Qu\u00e8 s\u00f3n les aurores boreals?<\/a><\/li>\n\n\n\n<li><a href=\"#elements\">Elements clau per poder veure aurores boreals<\/a><\/li>\n\n\n\n<li><a href=\"#verdes\">De quin color s\u00f3n les aurores boreals?<\/a><\/li>\n\n\n\n<li><a href=\"#epoca\">Quina \u00e9s l&#8217;\u00e8poca d&#8217;aurores boreals?<\/a><\/li>\n\n\n\n<li><a href=\"#on\">On podem veure aurores boreals?<\/a>\n<ul class=\"wp-block-list\">\n<li><a href=\"#tromso\">Troms\u00f8<\/a><\/li>\n\n\n\n<li><a href=\"#lofoten\">Lofoten i Cap Nord<\/a><\/li>\n\n\n\n<li><a href=\"#kiruna\">Kiruna<\/a><\/li>\n\n\n\n<li><a href=\"#rovaniemi\">Rovaniemi<\/a><\/li>\n\n\n\n<li><a href=\"#islandia\">Isl\u00e0ndia<\/a><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><a href=\"#conclusions\">Conclusions<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"que-son\"><strong>Qu\u00e8 s\u00f3n les aurores boreals?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Segur que t&#8217;has preguntat qu\u00e8 s\u00f3n les aurores boreals. Aquest fenomen \u00e9s el resultat de la interacci\u00f3 de les part\u00edcules solars expulsades hores abans pel sol amb els elements qu\u00edmics de la nostra atmosfera. Pero intentem explicar aquest proc\u00e9s qu\u00edmic una mica m\u00e9s detalladament.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Imagina el sol. Segurament has vist per les not\u00edcies o en alguns videos per les xarxes socials aquestes flamarades que ens posen en alerta per la possible alteraci\u00f3 en el funcionament dels nostres sat\u00e8l\u00b7lits. Doncs b\u00e9, aix\u00f2 succeeix constantment amb molta menys intensitat. \u00c9s a dir, <strong>sempre hi ha un flux de part\u00edcules solars<\/strong> que s\u00f3n expulsades del sol. Aquest flux l\u2019anomenem vent solar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les part\u00edcules d\u2019aquest vent solar estan carregades el\u00e8ctricament i s\u2019anomenen ions. Quan passen per la terra i xoquen amb la nostra atmosfera, alguns d\u2019aquests ions queden atrapats, concretament a la ionosfera (ara t\u00e9 m\u00e9s sentit el nom, oi?). \u00c9s en aquest moment quan comen\u00e7a una vor\u00e0gine de xocs entre aquest vent solar, els ions, amb els elements de la nostra atmosfera, principalment amb oxigen i nitrogen. Aquest proc\u00e9s sobrecarrega els \u00e0toms dels elements terrestres que, per tornar al seu estat natural, emeten fotons, \u00e9s a dir, llum.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"534\" src=\"https:\/\/traveladic.com\/wp-content\/uploads\/2024\/04\/aurora-boreal-traveladic.jpg\" alt=\"\" class=\"wp-image-3543\" srcset=\"https:\/\/traveladic.com\/wp-content\/uploads\/2024\/04\/aurora-boreal-traveladic.jpg 800w, https:\/\/traveladic.com\/wp-content\/uploads\/2024\/04\/aurora-boreal-traveladic-600x401.jpg 600w, https:\/\/traveladic.com\/wp-content\/uploads\/2024\/04\/aurora-boreal-traveladic-768x513.jpg 768w, https:\/\/traveladic.com\/wp-content\/uploads\/2024\/04\/aurora-boreal-traveladic-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"elements\"><strong>Elements clau per poder veure aurores boreals<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hi ha 3 elements clau per poder veure aurores boreals de setembre a mar\u00e7. Sense els 3, aconseguir observar aurores pot ser molt complicat o directament impossible:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Foscor<\/strong>: com hem dit, sense foscor les aurores boreals son imperceptibles.<\/li>\n\n\n\n<li><strong>Cel destapat<\/strong>: si hi ha una nuvolositat abundant, ser\u00e0 impossible percebre l&#8217;aurora.<\/li>\n\n\n\n<li><strong>Activitat solar<\/strong>: com hem explicat, les aurores s\u00f3n l&#8217;interacci\u00f3 de les part\u00edcules solars amb la nostra atm\u00f2sfera. Quan m\u00e9s activitat solar, m\u00e9s probabilitats de poder gaudir de l&#8217;aurora boreal. Cal fer esment que <strong>sempre<\/strong> hi ha activitat solar. <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"verdes\"><strong>De quin color s\u00f3n les aurores boreals?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Fins ara hem vist qu\u00e8 s\u00f3n les aurores boreals per\u00f2, perqu\u00e8 normalment son verdes i qu\u00e8 influeix en el color? Doncs un dels factors ja l\u2019hem descobert abans: l\u2019element amb el qual els ions interactuen. L\u2019altre \u00e9s l\u2019al\u00e7ada on tot aix\u00f2 passa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les aurores normalment s\u2019activen entre 300 i 100 quil\u00f2metres sobre de la superf\u00edcie terrestre. A aquesta al\u00e7ada l\u2019element predominant \u00e9s l\u2019oxigen. I aquest element necessita menys d\u2019un segon per sobrecarregar-se i emetre un fot\u00f3 verd. \u00c9s a dir, tenim ions que arriben del sol i van xocant amb els nostres \u00e0toms d&#8217;oxigen. Aquests es carreguen en 1 segon i emeten, per descarregar-se, el fot\u00f3 verd. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ara b\u00e9, quan aquesta reacci\u00f3 qu\u00edmica succeeix per sobre dels 300 quil\u00f2metres, on l\u2019oxigen est\u00e0 m\u00e9s \u201cespaiat\u201d, s\u00ed que pot ser que l&#8217;\u00e0tom d&#8217;oxigen tardi m\u00e9s temps a sobrecarregar-se i, per tant, tingui el temps necessari per emetre el fot\u00f3 vermell. \u00c9s llavors quan es produeix l\u2019aurora vermella.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Finalment, quan els ions aconsegueixen baixar per sota dels 100 quil\u00f2metres, el nitrogen, que \u00e9s l\u2019element m\u00e9s com\u00fa a l\u2019atmosfera i el m\u00e9s habitual en cotes m\u00e9s baixes, \u00e9s el que interactua amb els ions i produeix colors liles i blaus (tamb\u00e9 rosats). \u00c9s per aquesta ra\u00f3 que si tens la sort de veure aurores potents a l\u2019\u00e0rtic, veur\u00e0s el color habitual verd i, per les parts inferiors, observar\u00e0s tonalitats liles, blaves,roses o blanques. Mira aquest video d\u2019un dels nostres viatges (posa el so):<\/p>\n\n\n\n<a href=\"https:\/\/www.instagram.com\/p\/C2Scu1hISJt\" class=\"btn btn-style-1\" target=\"_blank\" rel=\"noopener\">video real d&#8217;aurores<\/a>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"epoca\"><strong>Quina \u00e9s l&#8217;\u00e8poca d&#8217;aurores boreals?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les aurores boreals succeeixen durant tot l&#8217;any constantment. Aquesta frase \u00e9s important: <strong>hi ha aurores cada dia<\/strong>. Ara b\u00e9, aix\u00f2 no vol dir que aquestes succeeixin a tot arreu alhora ni que siguin visibles sempre. Per saber l&#8217;\u00e8poca d&#8217;aurores boreals hi ha un factor clau: la foscor. Sense foscor, percebre l&#8217;aurora \u00e9s impossible. Per tant, i tenint en compte que les zones properes al pol nord tenen 24 hores de sol a l&#8217;estiu, <strong>l&#8217;epoca d&#8217;aurores boreals va des de setembre fins a mar\u00e7<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"on\"><strong>On podem veure aurores boreals?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Els millors llocs per veure aurores boreals se situen sempre a la zona \u00e0rtica, prop del pol nord i per sobre de la latitud 60. Si mireu un mapa us adonareu r\u00e0pid que hi ha molts llocs adequats en aquestes latituds. Per\u00f2 la climatologia i, sobretot, la dificultat per accedir a alguns d&#8217;aquests paratges seran claus per determinar els millors destins on veure aurores boreals.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Per tant, els pa\u00efsos on es poden veure aurores boreals de manera m\u00e9s habitual s\u00f3n aquells que estan propers al pol nord: <strong>Noruega, Finl\u00e0ndia, Su\u00e8cia, Isl\u00e0ndia, R\u00fassia, Canad\u00e0 i EEUU (Alaska)<\/strong>. Et detallem els nostres llocs preferits:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"tromso\"><strong>Troms\u00f8, Noruega<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Troms\u00f8, la capital de l&#8217;\u00e0rtic, \u00e9s el nostre lloc preferit. Per qu\u00e8? En primer lloc per la facilitat per arribar a aquesta ciutat noruega. Alguns aeroports europeus tenen vol directe a Troms\u00f8. La majoria arriben f\u00e0cilment fent una parada a Oslo. L&#8217;aeroport, a m\u00e9s, \u00e9s a 10-20 minuts de la ciutat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un altre dels factors clau per situar la ciutat noruega al capdamunt de la nostra llista \u00e9s la quantitat d&#8217;altres aventures disponibles. Per exemple, al novembre i al desembre pots fer un creuer pels fiords a la recerca de balenes. Tamb\u00e9 pots anar amb trineu de gossos o de rens i con\u00e8ixer la cultura sami (origin\u00e0ria de la zona). Un altre dels tours m\u00e9s coneguts \u00e9s la visita a l&#8217;hotel de gel que cada any es munta quan arriba el fred i es desmunta quan la calor comen\u00e7a a florir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Finalment, Troms\u00f8 t\u00e9 un avantatge respecte les altres ciutats de la lap\u00f2nia sueca i finlandesa: la seva orografia. La \u00abcapital de l&#8217;\u00e0rtic\u00bb est\u00e0 situada en una zona molt muntanyosa molt a prop del mar. Aix\u00f2 genera m\u00e9s n\u00favols per\u00f2, a la vegada, tamb\u00e9 genera petits micro-climes i molt corrent d&#8217;aire. Aquest corrent mou els n\u00favols i aix\u00f2 fa que a 90 minuts de Troms\u00f8 sempre hi hagi algun indret amb el cel destapat. Clar que llavors cal trobar-lo. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I si tu no ets un expert meteorol\u00f2gic i tampoc tens experi\u00e8ncia condu\u00efnt per carreteres gelades, a Travel\u00e0dic t&#8217;oferim unir-te a algun dels nostres viatges en grup i en catal\u00e0 que fem durant la tardor i l&#8217;hivern. Si vols m\u00e9s informaci\u00f3, prem el seg\u00fcent enlla\u00e7:<\/p>\n\n\n\n<a href=\"\/viatge-aurores-boreals-i-balenes\/\" class=\"btn btn-style-1\" target=\"_blank\" rel=\"noopener\">Viatge en grup a Noruega<\/a>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si prefereixes viatjar al teu aire, ja sigui de forma privada o amb activitats en grups petits no catalans, consulta&#8217;ns:<\/p>\n\n\n\n<a href=\"\/aurores-noruega\/\" class=\"btn btn-style-1\" target=\"_blank\" rel=\"noopener\">Viatge al teu aire a Noruega<\/a>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"lofoten\"><strong>Illes Lofoten i Cap Nord, Noruega<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tot i ser dos llocs diferents, un al sud-oest de Troms\u00f8 i l&#8217;altre molt m\u00e9s al nord, tots dos llocs s\u00f3n cada cop m\u00e9s famosos per l&#8217;espectacularitat de les seves aurores. La difer\u00e8ncia rau en la dificultat d&#8217;arribar-hi, ja que es necessiten 2 parades i el dia sencer per fer-ho. Per tant, tots dos llocs s\u00f3n excel\u00b7lents si tens un m\u00ednim d&#8217;1 setmana. Pregunta&#8217;ns si vols m\u00e9s informaci\u00f3 sobre aquesta destinaci\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"kiruna\"><strong>Kiruna, Lapland, Su\u00e8cia<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La regi\u00f3 de Lapland (o Lap\u00f2nia) i, en concret la zona de Kiruna, \u00e9s un altre dels llocs espectaculars que no es poden oblidar en un article sobre on i quan veure aurores boreals. Aquesta regi\u00f3 ofereix aurores de qualitat i un bon nombre d&#8217;activitats exteriors per a gustos selectes. Es pot anar amb trineu, anar a pescar o observar el cel i les seves estrelles (fins i tot sense aurores) gr\u00e0cies a la baixa pol\u00b7luci\u00f3 del lloc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kiruna, a m\u00e9s, est\u00e0 a prop d&#8217;Abisko, un petit poble conegut per tenir cels destapats molts dies de l&#8217;any. Tot i aix\u00f2, aquesta zona t\u00e9 el problema de les lap\u00f2nies internes. I \u00e9s que quan \u00e9s n\u00favol ser\u00e0 dif\u00edcil trobar un tros de cel destapat a prop.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"rovaniemi\"><strong>Rovaniemi, Lapland, Finl\u00e0ndia<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u00ed, amb el mateix nom, aquesta regi\u00f3 de Finl\u00e0ndia (Lapland) \u00e9s coneguda per tenir 200 nits d&#8217;aurores cada any. A m\u00e9s, es diu que d&#8217;aqu\u00ed va sortir Santa Claus, aix\u00ed que \u00e9s un lloc ideal perqu\u00e8 els nens gaudeixin amb les seves fantasies nadalenques.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un dels avantatges de Rovaniemi \u00e9s que est\u00e0 a una sola parada de la majoria de grans ciutats europees. Des de Barcelona, \u200b\u200bper exemple, s&#8217;hi arriba f\u00e0cilment amb escala a H\u00e8lsinki en un viatge, amb bones connexions, de nom\u00e9s 8 hores.\u00a0Tamb\u00e9 hi ha alguns vols directes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Aqu\u00ed novament tenim el problema de les lap\u00f2nies internes. Quan hi ha n\u00favol, aqu\u00ed acostumen a cancel\u00b7lar sortides d&#8217;aurores.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"islandia\">Isl\u00e0ndia<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tot i que Isl\u00e0ndia \u00e9s molt coneguda per les seves aurores, la realitat \u00e9s que no \u00e9s millor que els destins anteriors. De fet, aquesta illa no est\u00e0 dins del cercle polar \u00e0rtic i, a vegades, quan als destins anteriors hi ha aurores, a Isl\u00e0ndia no n&#8217;hi ha. El punt fort d&#8217;Isl\u00e0ndia \u00e9s la seva bellesa: cascades congelades, volcans actius, falles enormes i platges amb icebergs. Si hi vas a l&#8217;hivern, a m\u00e9s, tingues en compte que pot fer-hi molt vent.  <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusions\"><strong>Conclusions<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Un cop ent\u00e8s qu\u00e8 s\u00f3n les aurores boreals, quan i on succeeixen, els factors clau i perqu\u00e8 s\u00f3n del color que s\u00f3n, ara nom\u00e9s queda gaudir-ne en primera persona. Recorda que si parles catal\u00e0 i t\u2019agrada viatjar en grup, pots acompanyar-nos en alguna de les nostres aventures a l\u2019\u00e0rtic. Acostumem a saber les dates d\u2019hivern pels voltants de setmana santa.<\/p>\n\n\n\n<a href=\"\/viatge-daurores-boreals\/\" class=\"btn btn-style-1\" target=\"_blank\" rel=\"noopener\">Viatges d&#8217;aurores boreals<\/a>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Finalment, si vols viatjar al teu aire, ja sigui de forma privada o amb activitats en grups petits no catalans, llavors tenim la proposta perfecte:<\/p>\n\n\n\n<a href=\"\/aurores-noruega\/\" class=\"btn btn-style-1\" target=\"_blank\" rel=\"noopener\">Aurores al teu aire<\/a>\n","protected":false},"excerpt":{"rendered":"<p>\u00cdndex Qu\u00e8 s\u00f3n les aurores boreals? Segur que t&#8217;has preguntat qu\u00e8 s\u00f3n les aurores boreals. Aquest fenomen \u00e9s el resultat de la interacci\u00f3 de les part\u00edcules solars expulsades hores abans pel sol amb els elements qu\u00edmics de la nostra atmosfera. Pero intentem explicar aquest proc\u00e9s qu\u00edmic una mica m\u00e9s detalladament.\u00a0 Imagina el sol. Segurament has&#8230; <a class=\"moretag\" href=\"https:\/\/traveladic.com\/ca\/que-son-les-aurores-boreals\/\"> sigue leyendo &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":4701,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[126],"tags":[],"class_list":["post-3521","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aurores"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Qu\u00e8 s\u00f3n les aurores boreals: la guia definitiva | Travel\u00e0dic.com<\/title>\n<meta name=\"description\" content=\"Qu\u00e8 s\u00f3n les aurores boreals? 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