{"id":700,"date":"2026-06-08T15:52:12","date_gmt":"2026-06-08T13:52:12","guid":{"rendered":"https:\/\/wp.unil.ch\/alpenv\/?p=700"},"modified":"2026-06-08T15:52:13","modified_gmt":"2026-06-08T13:52:13","slug":"new-paper-published-increasing-river-sediment-concentration-and-flux-across-the-pan-arctic","status":"publish","type":"post","link":"https:\/\/wp.unil.ch\/alpenv\/2026\/06\/new-paper-published-increasing-river-sediment-concentration-and-flux-across-the-pan-arctic\/","title":{"rendered":"New Paper Published : Increasing river sediment concentration and flux across the pan-Arctic"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Arctic rivers transport water, sediment and carbon, playing a central role in coastal stability and biogeochemical cycling. Although freshwater discharge to the Arctic Ocean has increased in recent decades, limited observations have hindered system-wide assessment of long-term, reach-level sediment dynamics. Here we develop a pan-Arctic-specific, satellite- and machine learning-based framework to reconstruct four decades of suspended sediment concentration dynamics for 4,331 river reaches. Our analysis reveals a significant increase in suspended sediment concentration in 40% of river reaches (858 out of 2,158) draining continuous permafrost zone, primarily driven by increasing discharge, intensified thermokarst disturbances and fires. The pan-Arctic land\u2013ocean sediment flux averages 315\u2009\u00b1\u200933 Mt yr<sup>\u22121<\/sup>, with 198\u2009\u00b1\u200935 Mt yr<sup>\u22121<\/sup> (63%) from the six major rivers (Yenisey, Lena, Ob\u2019, Kolyma, Yukon and Mackenzie) and 117\u2009\u00b1\u200913 Mt yr<sup>\u22121<\/sup> (37%) from 263 previously overlooked small- and medium-sized coastal rivers. The total land\u2013ocean sediment flux has increased by ~15%, from ~299\u2009\u00b1\u200928 Mt yr<sup>\u22121<\/sup> in the 1980s to 344\u2009\u00b1\u200929 Mt yr<sup>\u22121<\/sup> in the 2010s. These results provide a baseline for pan-Arctic river sediment dynamics and underscore the essential yet underappreciated contribution of small- and medium-sized coastal rivers to Arctic landscape and carbon cycle changes. A copy of the paper is freely available <a href=\"https:\/\/www.nature.com\/articles\/s41561-026-01960-z\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Arctic rivers transport water, sediment and carbon, playing a central role in coastal stability and biogeochemical cycling. Although freshwater discharge to the Arctic Ocean has increased in recent decades, limited observations have hindered system-wide assessment of long-term, reach-level sediment dynamics.<\/p>\n","protected":false},"author":1001734,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-700","post","type-post","status-publish","format-standard","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/wp.unil.ch\/alpenv\/wp-json\/wp\/v2\/posts\/700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.unil.ch\/alpenv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.unil.ch\/alpenv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/alpenv\/wp-json\/wp\/v2\/users\/1001734"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/alpenv\/wp-json\/wp\/v2\/comments?post=700"}],"version-history":[{"count":1,"href":"https:\/\/wp.unil.ch\/alpenv\/wp-json\/wp\/v2\/posts\/700\/revisions"}],"predecessor-version":[{"id":701,"href":"https:\/\/wp.unil.ch\/alpenv\/wp-json\/wp\/v2\/posts\/700\/revisions\/701"}],"wp:attachment":[{"href":"https:\/\/wp.unil.ch\/alpenv\/wp-json\/wp\/v2\/media?parent=700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.unil.ch\/alpenv\/wp-json\/wp\/v2\/categories?post=700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.unil.ch\/alpenv\/wp-json\/wp\/v2\/tags?post=700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}