[et_pb_section fb_built=”1″ fullwidth=”on” _builder_version=”4.16″ custom_padding=”0px||0px|||” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_fullwidth_slider _builder_version=”4.16″ min_height=”112px” height=”400px” custom_margin=”0px||||false|false” custom_padding=”0px||18px||false|false” auto=”on” auto_ignore_hover=”on” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/Br\u010di\u0107_Drvenik02-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/ban2-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/20190228_094232-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/ban3-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/Bijele_stijene-Gorski_kotar-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/ban4-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/ban5-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][\/et_pb_fullwidth_slider][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.16″ global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_row _builder_version=”4.16″ global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.16″ global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.16″ text_font_size=”32px” header_2_text_color=”#1e5096″ global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n
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Sve je vi\u0161e dokaza da su mnoge naslage velikih obalnih olujnih blokova, koje su prona\u0111ene na isturenim stjenovitim obalama oceana, nastale zbog ekstremnih olujnih valova, a ne zbog katastrofalnih tsunamija, kako se ranije mislilo. Osim toga, prije prvog otkri\u0107a u sjevernom Jadranu prije nekoliko godina, takve se naslage nisu o\u010dekivale u relativno plitkim poluzatvorenim kopnenim bazenima. Ovdje izvje\u0161tavamo o velikoj obalnoj naslagi krupnih klastita na srednjojadranskom otoku Mana, koja tako\u0111er sadr\u017ei brojne velike olujne blokove te\u0161ke i do nekoliko tona. Usamljene gromade nalaze se i izvan naslage, bli\u017ee djelomi\u010dno potopljenoj morskoj litici i udaru valova. Erozija vrha litice i pomicanje fragmenata karbonatne podloge zapo\u010delo je kada su ekstremni valovi preplavili najni\u017ei dio ruba litice, vjerojatno tijekom kasnog holocenskog porasta razine mora. Analiza fragmentacije olujne naslage temeljena je na UAS fotogrametriji, a izra\u010dunata vrijednost fraktalne dimenzije klasta pokazuju da je materijal bio fragmentiran vi\u0161estrukim doga\u0111ajima visoke energije. Usporedba dostupnih fotografija pokazuje da su se pomaci najizlo\u017eenijih usamljenih gromada vjerojatno dogodili tijekom oluje Vaia – posljednje ekstremne oluje koja je pogodila Jadran 29. listopada 2018. Me\u0111utim, modelirana maksimalna visina vala ju\u017eno od Mane tijekom vrhunca te oluje ne bi bila dovoljna da pomakne ove gromade. Ipak, lokalna geomorfologija vjerojatno je dodatno utjecala na pove\u0107anje visine valova koji su, u kombinaciji sa specifi\u010dnim geolo\u0161kim zna\u010dajkama, uzrokovali pomicanje gromada. Put olujnih ju\u017enih valova koji udaraju u otok Mana kra\u0107i je u odnosu na sjevernojadransko polje olujnih blokova u ju\u017enoj Istri (Kamenjak). Dakle, takva aktivna lokalna erozija op\u0107enito stabilne isto\u010dnojadranske kr\u0161ke obale ovisi o ekstremnom jugu koje ima slabiji utjecaj na srednjem nego na sjevernom Jadranu.\u00a0<\/p>\n