{"id":2040,"date":"2019-08-19T18:24:15","date_gmt":"2019-08-19T16:24:15","guid":{"rendered":"http:\/\/www.ub.edu\/risknat\/?page_id=2040"},"modified":"2023-07-27T01:32:21","modified_gmt":"2023-07-26T23:32:21","slug":"despreniments-de-roques","status":"publish","type":"page","link":"https:\/\/www.ub.edu\/risknat\/despreniments-de-roques\/","title":{"rendered":"Despreniments de roques"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-background-position:left top;--awb-border-sizes-top:0px;--awb-border-sizes-bottom:0px;--awb-border-sizes-left:0px;--awb-border-sizes-right:0px;--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:90px;--awb-padding-bottom:50px;\" ><div class=\"fusion-builder-row fusion-row\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_6 1_6 fusion-one-sixth fusion-column-first fusion-no-small-visibility\" style=\"--awb-bg-size:cover;width:13.3333%; margin-right: 4%;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_2_3 2_3 fusion-two-third\" style=\"--awb-bg-size:cover;--awb-margin-bottom:30px;width:65.3333%; margin-right: 4%;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-text fusion-text-1\"><p>Els despreniments de roques es produeixen en vessants rocosos d&#8217;elevat pendent, al peu dels quals s\u2019hi transporten i s\u2019acumulen fragments de roca de dimensions molt variables.<\/p>\n<ul>\n<\/ul>\n<\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_6 1_6 fusion-one-sixth fusion-column-last fusion-no-small-visibility\" style=\"--awb-bg-size:cover;width:13.3333%;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-3 fusion_builder_column_1_6 1_6 fusion-one-sixth fusion-column-first fusion-no-small-visibility\" style=\"--awb-bg-size:cover;width:13.3333%; margin-right: 4%;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-4 fusion_builder_column_2_3 2_3 fusion-two-third\" style=\"--awb-bg-size:cover;--awb-margin-bottom:30px;width:65.3333%; margin-right: 4%;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-text fusion-text-2\"><h3>Objectius<\/h3>\n<p>1) millorar les metodologies basades en l&#8217;aprenentatge autom\u00e0tic per a la detecci\u00f3 autom\u00e0tica de despreniments en diverses litologies per analitzar el seu efecte en les relacions magnitud-freq\u00fc\u00e8ncia. Comparar nous conjunts de dades de caigudes de roques amb bases de dades d&#8217;altres institucions internacionals per ampliar el coneixement sobre els processos d&#8217;inestabilitat implicats.<\/p>\n<p>2) millorar el seguiment sub-diari dels despreniments mitjan\u00e7ant fotogrametria a\u00e8ria i terrestre sub-di\u00e0ria, LiDAR, senyals s\u00edsmiques i GNSS-RTK per correlacionar amb l&#8217;evoluci\u00f3 de factors desencadenants com la precipitaci\u00f3, les oscil\u00b7lacions t\u00e8rmiques, i  les vibracions.<\/p>\n<p>3) desenvolupar procediments per a la identificaci\u00f3 autom\u00e0tica de despreniments de roques a partir de senyals s\u00edsmiques basats en m\u00e8todes STA\/LTA, per obtenir resultats s\u00f2lids en temps quasi real, com a base dels sistemes d&#8217;alerta primerenca.<\/p>\n<ul>\n<\/ul>\n<\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-5 fusion_builder_column_1_6 1_6 fusion-one-sixth fusion-column-last fusion-no-small-visibility\" style=\"--awb-bg-size:cover;width:13.3333%;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-6 fusion_builder_column_1_6 1_6 fusion-one-sixth fusion-column-first fusion-no-small-visibility\" style=\"--awb-bg-size:cover;width:13.3333%; margin-right: 4%;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-7 fusion_builder_column_2_3 2_3 fusion-two-third\" style=\"--awb-bg-size:cover;--awb-margin-bottom:30px;width:65.3333%; margin-right: 4%;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-text fusion-text-3\"><h3 data-fontsize=\"24\" style=\"--fontSize: 24; line-height: 1.4;\" data-lineheight=\"33.6px\" class=\"fusion-responsive-typography-calculated\"><span style=\"color: var(--awb-text-color); font-family: var(--awb-text-font-family); font-size: var(--awb-font-size); font-style: var(--awb-text-font-style); font-weight: var(--awb-text-font-weight); letter-spacing: var(--awb-letter-spacing); text-align: var(--awb-content-alignment); text-transform: var(--awb-text-transform); background-color: var(--awb-bg-color);\">Col\u00b7laboracions<\/span><\/h3>\n<p><span style=\"color: var(--awb-text-color); font-family: var(--awb-text-font-family); font-size: var(--awb-font-size); font-style: var(--awb-text-font-style); font-weight: var(--awb-text-font-weight); letter-spacing: var(--awb-letter-spacing); text-align: var(--awb-content-alignment); text-transform: var(--awb-text-transform); background-color: var(--awb-bg-color);\"><div class='yrm-content yrm-content-2 yrm-content-hide  ' id='yrm-naobG' data-id='2' data-show-status='false' data-after-action='' style=\"visibility: hidden;height: 0;\">\n\t\t\t<div id='yrm-inner-content-yrm-naobG' class='yrm-inner-content-wrapper yrm-cntent-2'><\/span><span style=\"color: var(--awb-text-color); font-family: var(--awb-text-font-family); font-size: var(--awb-font-size); font-style: var(--awb-text-font-style); font-weight: var(--awb-text-font-weight); letter-spacing: var(--awb-letter-spacing); text-align: var(--awb-content-alignment); text-transform: var(--awb-text-transform); background-color: var(--awb-bg-color);\">La nostra investigaci\u00f3 sobre el seguiment 4D de caigudes de roques a partir de dades de fotogrametria s&#8217;est\u00e0 desenvolupant en estreta col\u00b7laboraci\u00f3 amb X.Blanch i A.Eltner (Technische. Universit\u00e4t Dresden, Alemanya), A.Abellan (CREALP, Su\u00efssa) i J.M.Aza\u00f1on (Universitat de Granada) , amb qui hem participat en dos projectes de transfer\u00e8ncia auspiciats pel Patronat de l&#8217;Alhambra i Generalife de Granada. S&#8217;estan duent a terme metodologies per a la identificaci\u00f3 autom\u00e0tica de despreniments a partir de LiDAR o comparaci\u00f3 de n\u00favols de punts fotogram\u00e8trics en col\u00b7laboraci\u00f3 amb A.Puig i M.Salam\u00f3 del Departament de Matem\u00e0tica i Inform\u00e0tica (UB), i del Grup de Recerca WAI, IMUB i Instituts UBICS, de la UB, amb L.Blanco d&#8217;Anufra\u2014Soil and Water Consulting (Espanya), i amb M.Janeras i O.Pedraza de l&#8217;ICGC. D&#8217;altra banda, s&#8217;est\u00e0 desenvolupant la investigaci\u00f3 sobre el seguiment de la caiguda de roques a partir de senyals s\u00edsmiques en col\u00b7laboraci\u00f3 amb M.Tapia del Laboratori d&#8217;Estudis Geof\u00edsics Eduard Fontser\u00e8-LEGEF (Institut d&#8217;Estudis Catalans-IEA).<\/span><span style=\"color: var(--awb-text-color); font-family: var(--awb-text-font-family); font-size: var(--awb-font-size); font-style: var(--awb-text-font-style); font-weight: var(--awb-text-font-weight); letter-spacing: var(--awb-letter-spacing); text-align: var(--awb-content-alignment); text-transform: var(--awb-text-transform); background-color: var(--awb-bg-color);\"><\/div>\n\t\t<\/div><div class='yrm-btn-wrapper yrm-btn-wrapper-2 yrm-more-button-wrapper  '\n\t\tdata-custom-more-class-name='' data-custom-less-class-name=''><span title='' data-less-title='' data-more-title='' class='yrm-toggle-expand  yrm-toggle-expand-2 ' data-rel='yrm-naobG' data-more='m\u00e9s text' data-less='menys text'><span class='yrm-text-wrapper yrm-text-wrapper-custom-dimensions'><span class=\"yrm-button-text-2 yrm-button-text-span\">m\u00e9s text<\/span><\/span><\/span><\/div><\/span><\/p>\n<ul>\n<\/ul>\n<\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-8 fusion_builder_column_1_6 1_6 fusion-one-sixth fusion-column-last fusion-no-small-visibility\" style=\"--awb-bg-size:cover;width:13.3333%;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:20px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start\" style=\"max-width:1144px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-9 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"awb-gallery-wrapper awb-gallery-wrapper-1 button-span-yes\" style=\"--more-btn-alignment:center;\" data-limit=\"6\" data-page=\"1\"><div style=\"margin:-5px;--awb-aspect-ratio:1 \/ 1;--awb-bordersize:0px;\" class=\"fusion-gallery fusion-gallery-container fusion-grid-3 fusion-columns-total-6 fusion-gallery-layout-grid fusion-gallery-1 has-aspect-ratio\"><div style=\"padding:5px;\" class=\"fusion-grid-column fusion-gallery-column fusion-gallery-column-3 hover-type-zoomin\"><div class=\"fusion-gallery-image\"><a href=\"https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-cremallera-Nuria-Foto-JMVilaplana.png\" data-caption=\"Despreniment de roques amb afectaci\u00f3 a la via del cremallera de N\u00faria. Foto Joan Manuel Vilaplana\" rel=\"noreferrer\" data-rel=\"iLightbox[gallery_image_1]\" class=\"fusion-lightbox\" target=\"_self\"><img decoding=\"async\" data-src=\"https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-cremallera-Nuria-Foto-JMVilaplana.png\" width=\"1024\" height=\"431\" alt=\"\" title=\"Despreniment-cremallera Nuria-Foto JMVilaplana\" aria-label=\"Despreniment-cremallera Nuria-Foto JMVilaplana\" class=\"img-responsive wp-image-2047 lazyload\" data-srcset=\"https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-cremallera-Nuria-Foto-JMVilaplana-200x84.png 200w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-cremallera-Nuria-Foto-JMVilaplana-400x168.png 400w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-cremallera-Nuria-Foto-JMVilaplana-600x253.png 600w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-cremallera-Nuria-Foto-JMVilaplana-800x337.png 800w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-cremallera-Nuria-Foto-JMVilaplana.png 1024w\" data-sizes=\"(min-width: 2200px) 100vw, (min-width: 784px) 363px, (min-width: 712px) 545px, (min-width: 640px) 712px,\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/431;\" \/><\/a><\/div><\/div><div style=\"padding:5px;\" class=\"fusion-grid-column fusion-gallery-column fusion-gallery-column-3 hover-type-zoomin\"><div class=\"fusion-gallery-image\"><a href=\"https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-micrites-Jur\u00e0ssic-Prat-de-Compte-2004-Foto-JMVilaplana.jpg\" data-caption=\"Despreniment de roques calc\u00e0ries del Jur\u00e0ssic a Prat del Compte, 2004. Foto Joan Manuel Vilaplana\" rel=\"noreferrer\" data-rel=\"iLightbox[gallery_image_1]\" class=\"fusion-lightbox\" target=\"_self\"><img decoding=\"async\" data-src=\"https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-micrites-Jur\u00e0ssic-Prat-de-Compte-2004-Foto-JMVilaplana.jpg\" width=\"1704\" height=\"2272\" alt=\"\" title=\"Despreniment calc\u00e0ries Jur\u00e0ssic &#8211; Prat de Compte 2004 &#8211; Foto JMVilaplana\" aria-label=\"Despreniment calc\u00e0ries Jur\u00e0ssic &#8211; Prat de Compte 2004 &#8211; Foto JMVilaplana\" class=\"img-responsive wp-image-2046 lazyload\" data-srcset=\"https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-micrites-Jur\u00e0ssic-Prat-de-Compte-2004-Foto-JMVilaplana-200x267.jpg 200w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-micrites-Jur\u00e0ssic-Prat-de-Compte-2004-Foto-JMVilaplana-400x533.jpg 400w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-micrites-Jur\u00e0ssic-Prat-de-Compte-2004-Foto-JMVilaplana-600x800.jpg 600w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-micrites-Jur\u00e0ssic-Prat-de-Compte-2004-Foto-JMVilaplana-800x1067.jpg 800w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-micrites-Jur\u00e0ssic-Prat-de-Compte-2004-Foto-JMVilaplana-1200x1600.jpg 1200w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniment-micrites-Jur\u00e0ssic-Prat-de-Compte-2004-Foto-JMVilaplana.jpg 1704w\" data-sizes=\"(min-width: 2200px) 100vw, (min-width: 784px) 363px, (min-width: 712px) 545px, (min-width: 640px) 712px,\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1704px; --smush-placeholder-aspect-ratio: 1704\/2272;\" \/><\/a><\/div><\/div><div style=\"padding:5px;\" class=\"fusion-grid-column fusion-gallery-column fusion-gallery-column-3 hover-type-zoomin\"><div class=\"fusion-gallery-image\"><a href=\"https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniments-de-roques-gen-2001-paret-dels-Degotalls-Muntanya-de-Montserrat-Foto-JMVilaplana-3.jpg\" data-caption=\"Despreniments de roques a la paret dels Degotalls, Muntanya de Montserrat, gener 2001. Foto Joan Manuel Vilaplana\" rel=\"noreferrer\" data-rel=\"iLightbox[gallery_image_1]\" class=\"fusion-lightbox\" target=\"_self\"><img decoding=\"async\" data-src=\"https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniments-de-roques-gen-2001-paret-dels-Degotalls-Muntanya-de-Montserrat-Foto-JMVilaplana-3.jpg\" width=\"2288\" height=\"1712\" alt=\"\" title=\"Despreniments de roques Montserrat &#8211; JMVilaplana\" aria-label=\"Despreniments de roques Montserrat &#8211; JMVilaplana\" class=\"img-responsive wp-image-2049 lazyload\" data-srcset=\"https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniments-de-roques-gen-2001-paret-dels-Degotalls-Muntanya-de-Montserrat-Foto-JMVilaplana-3-200x150.jpg 200w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniments-de-roques-gen-2001-paret-dels-Degotalls-Muntanya-de-Montserrat-Foto-JMVilaplana-3-400x299.jpg 400w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniments-de-roques-gen-2001-paret-dels-Degotalls-Muntanya-de-Montserrat-Foto-JMVilaplana-3-600x449.jpg 600w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniments-de-roques-gen-2001-paret-dels-Degotalls-Muntanya-de-Montserrat-Foto-JMVilaplana-3-800x599.jpg 800w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniments-de-roques-gen-2001-paret-dels-Degotalls-Muntanya-de-Montserrat-Foto-JMVilaplana-3-1200x898.jpg 1200w, https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniments-de-roques-gen-2001-paret-dels-Degotalls-Muntanya-de-Montserrat-Foto-JMVilaplana-3.jpg 2288w\" data-sizes=\"(min-width: 2200px) 100vw, (min-width: 784px) 363px, (min-width: 712px) 545px, (min-width: 640px) 712px,\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 2288px; --smush-placeholder-aspect-ratio: 2288\/1712;\" \/><\/a><\/div><\/div><div class=\"clearfix\"><\/div><div style=\"padding:5px;\" class=\"fusion-grid-column fusion-gallery-column fusion-gallery-column-3 hover-type-zoomin\"><div class=\"fusion-gallery-image\"><a href=\"https:\/\/www.ub.edu\/risknat\/wp-content\/uploads\/2019\/08\/Despreniments-de-roques-gen-2001-paret-dels-Degotalls-Muntanya-de-Montserrat-Foto-JMVilaplana-2-1.jpg\" data-caption=\"Despreniments de roques a la paret dels Degotalls, Muntanya de Montserrat, gener 2001. 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