{"id":2142,"date":"2019-08-19T22:21:53","date_gmt":"2019-08-19T20:21:53","guid":{"rendered":"http:\/\/www.ub.edu\/risknat\/?page_id=2142"},"modified":"2023-08-01T01:13:52","modified_gmt":"2023-07-31T23:13:52","slug":"datacio-de-fenomens","status":"publish","type":"page","link":"https:\/\/www.ub.edu\/risknat\/datacio-de-fenomens\/","title":{"rendered":"Dataci\u00f3 de fen\u00f2mens"},"content":{"rendered":"

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La finalitat \u00e9s acotar la freq\u00fc\u00e8ncia o la velocitat de fen\u00f2mens geol\u00f2gics associats a risc. Tenim una llarga traject\u00f2ria en la combinaci\u00f3 d’un ventall ampli de m\u00e8todes de dataci\u00f3 num\u00e8rica, incloent Radiocarboni, S\u00e8ries de l’Urani, cosmon\u00faclids terrestres (Be-10 i Al-26), Temoluminesc\u00e8ncia (TL), Luminesc\u00e8ncia activada \u00f2pticament (OSL, IRSL), Racemitzaci\u00f3 d’amino\u00e0cids, Paleomagnetisme i Dendrocronologia. L\u2019aplicaci\u00f3 d\u2019aquests m\u00e8todes la duem a terme en laboratoris externs a la UB, per\u00f2 sempre buscant una col\u00b7laboraci\u00f3 cient\u00edfica molt estreta amb els millors especialistes a nivell internacional de cada m\u00e8tode. La millora d\u2019aquest m\u00e8todes i la reducci\u00f3 d\u2019incerteses s\u00f3n clau per a establir la probabilitat de desencadenament de fen\u00f2mens perillosos en el futur.

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Els reptes que ens plantegem son:<\/p>\n

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  1. incentivar l\u2019aplicaci\u00f3 de m\u00e8todes innovadors de forma paral\u00b7lela a m\u00e8todes ben coneguts, per a explorar-ne el potencial i les limitacions. Aquest m\u00e8todes inclouen, per exemple, els basats en la combinaci\u00f3 de cosmon\u00faclids terrestres Beril\u00b7li-10 i Alumini-26 a partir de la presa de mostres de perfils en profunditat, l’aplicaci\u00f3 del martell de Schmidt a superf\u00edcies rocoses exposades, la S\u00e8rie de l\u2019Urani aplicats a la dataci\u00f3 de carbonats pedog\u00e8nics formats en fases inicials de s\u00f2ls carbonatats (cutans), la luminisc\u00e8ncia \u00f2ptica d\u2019infraroigs (IRSL) en feldspats, i la comparaci\u00f3 entre dades de radiocarboni i la racemitzaci\u00f3 d’amino\u00e0cids.<\/li>\n
  2. incloure, quan sigui rellevant, un estudi del desenvolupament de paleos\u00f2ls en l\u2019\u00e0n\u00e0lisi geomorfol\u00f2gica pr\u00e8via a qualsevol dataci\u00f3 num\u00e8rica, per maximitzar-ne les possibilitats d\u2019\u00e8xit.<\/div>\n\t\t<\/div>
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