{"id":684,"date":"2022-08-02T09:55:10","date_gmt":"2022-08-02T07:55:10","guid":{"rendered":"https:\/\/lpg-umr6112.fr\/anr-permolards\/"},"modified":"2022-09-19T15:49:51","modified_gmt":"2022-09-19T13:49:51","slug":"anr-permolards","status":"publish","type":"page","link":"https:\/\/lpg-umr6112.fr\/en\/permolards-project-tracking-the-degradation-of-mountain-permafrost-with-molards\/","title":{"rendered":"Permolards project : Tracking the degradation of mountain permafrost with molards"},"content":{"rendered":"\n

Perennially frozen slopes occur in many mountain ranges of the world, and temperature changes in these environments have notable impacts on the state of permafrost<\/strong>, leading to increased slope instability and hazard from mass movements. In areas of discontinuous permafrost, these slopes can be hard to identify with certainty.<\/p>\n\n\n\n

This project investigates \u201cmolards\u201d<\/strong> \u2013 cones of loose debris that result from thawing of blocks of ice-rich sediments mobilised by landslides in permafrost terrains<\/strong>. Molards are an understudied landform and have recently been shown to be an indicator of recent and ongoing permafrost degradation<\/strong>. In addition, they have spatial and geomorphic characteristics that reveal the dynamics of large mass movements.<\/p>\n\n\n\n

The PERMOLARDS project aims to build on these exciting new results and use molards as a geomorphological tool to understand climate change and natural hazard<\/strong>. We will use a multidisciplinary combination of field investigation, dating, laboratory and numerical simulations, modelling and remote sensing analysis to understand molard formation, evolution, morphology, longevity, and their environmental settings. <\/p>\n\n\n

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We will explore three unique case studies in Greenland<\/strong>, Canada<\/strong> and Iceland<\/strong>, where we have identified with certainty molards that formed under climatic conditions from the Holocene to the present in a variety of geographic settings<\/strong>.<\/p>\n\n\n\n

We will constrain the morphological degradation of molards in space and time by using a morphological approach and novel luminescence dating techniques.<\/p>\n\n\n\n

We will define the range of material properties and ice configurations under which molards can form through field investigations and through simulation via analogue models in a laboratory cold room<\/strong>. Based on these results ancient molards can then be used to infer ground-ice contents. We will establish the baseline criteria to distinguish molards from other mounds in landslide deposits using remote sensing and field data<\/strong> that can be used by other researchers.<\/p>\n\n\n\n

We will use 3D numerical models<\/strong> to assess the potential role of thaw fluids in molard-hosting landslides in modifying the flow behaviour and its impact on hazard.<\/p>\n\n\n\n

We will monitor and model the state of permafrost at the field site in Greenland<\/strong> to ascertain the state of permafrost degradation represented by molards in new and recent landsides.<\/p>\n\n\n\n

Finally, we will establish the use of molards as a geomorphological tool to track permafrost degradation in time and in different geological and geographical settings around the globe<\/strong>. By developing these actions, the project provides insights into permafrost degradation in space and time, and the hazard posed by landslides in cold environments.<\/p>\n\n\n\n

The project coordinator is Susan Conway<\/a>, Researcher CNRS.<\/strong><\/p>\n\n\n

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Perennially frozen slopes occur in many mountain ranges of the world, and temperature changes in these environments have notable impacts on the state of permafrost, leading to increased slope instability […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"footnotes":""},"coauthors":[94],"class_list":["post-684","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/lpg-umr6112.fr\/en\/wp-json\/wp\/v2\/pages\/684","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lpg-umr6112.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/lpg-umr6112.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/lpg-umr6112.fr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lpg-umr6112.fr\/en\/wp-json\/wp\/v2\/comments?post=684"}],"version-history":[{"count":1,"href":"https:\/\/lpg-umr6112.fr\/en\/wp-json\/wp\/v2\/pages\/684\/revisions"}],"predecessor-version":[{"id":685,"href":"https:\/\/lpg-umr6112.fr\/en\/wp-json\/wp\/v2\/pages\/684\/revisions\/685"}],"wp:attachment":[{"href":"https:\/\/lpg-umr6112.fr\/en\/wp-json\/wp\/v2\/media?parent=684"}],"wp:term":[{"taxonomy":"author","embeddable":true,"href":"https:\/\/lpg-umr6112.fr\/en\/wp-json\/wp\/v2\/coauthors?post=684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}