{"id":2585,"date":"2025-04-04T11:16:53","date_gmt":"2025-04-04T15:16:53","guid":{"rendered":"https:\/\/rivieresarythmiques.ca\/learn\/info-capsules\/regimes-decoulement-erratiques-ou-persistants\/"},"modified":"2025-04-15T10:53:27","modified_gmt":"2025-04-15T14:53:27","slug":"regimes-decoulement-erratiques-ou-persistants","status":"publish","type":"info-capsule","link":"https:\/\/rivieresarythmiques.ca\/fr\/apprendre\/info-capsules\/regimes-decoulement-erratiques-ou-persistants\/","title":{"rendered":"R\u00e9gimes d&rsquo;\u00e9coulement erratiques ou persistants"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1021\" height=\"833\" src=\"http:\/\/rivieresarythmiques.ca\/wp-content\/uploads\/2025\/01\/Info-capsule_ErraticPersistentRegimes_RequiredGraphics.webp\" alt=\"\" class=\"wp-image-1884\" style=\"width:400px\" srcset=\"https:\/\/rivieresarythmiques.ca\/wp-content\/uploads\/2025\/01\/Info-capsule_ErraticPersistentRegimes_RequiredGraphics.webp 1021w, https:\/\/rivieresarythmiques.ca\/wp-content\/uploads\/2025\/01\/Info-capsule_ErraticPersistentRegimes_RequiredGraphics-300x245.webp 300w, https:\/\/rivieresarythmiques.ca\/wp-content\/uploads\/2025\/01\/Info-capsule_ErraticPersistentRegimes_RequiredGraphics-768x627.webp 768w\" sizes=\"(max-width: 1021px) 100vw, 1021px\" \/><\/figure>\n\n<p><\/p>\n\n<p>Les hydrologues ont r\u00e9cemment cr\u00e9\u00e9 deux nouveaux qualificatifs pour d\u00e9crire les fluctuations du d\u00e9bit des cours d\u2019eau sur le long terme (c\u2019est-\u00e0-dire sur plusieurs ann\u00e9es). Les <strong>r\u00e9gimes persistants<\/strong> sont ceux dans lesquels les valeurs de d\u00e9bit quotidiennes ne s\u2019\u00e9cartent pas beaucoup de la moyenne \u00e0 long terme. Les <strong>r\u00e9gimes erratiques<\/strong> sont plut\u00f4t ceux dans lesquels les valeurs de d\u00e9bit journalier peuvent s\u2019\u00e9carter de mani\u00e8re significative de la moyenne \u00e0 long terme. Les r\u00e9gimes persistants sont donc domin\u00e9s par la moyenne, tandis que les r\u00e9gimes erratiques sont domin\u00e9s par la variance. Pourquoi s\u2019int\u00e9resser \u00e0 cette diff\u00e9rence ? Tout d\u2019abord, les r\u00e9gimes persistants sont moins associ\u00e9s aux inondations fluviales que les r\u00e9gimes erratiques. De plus, les r\u00e9gimes persistants et erratiques pr\u00e9sentent des degr\u00e9s de vuln\u00e9rabilit\u00e9 diff\u00e9rents aux changements d\u2019occupation des terres et aux changements climatiques.    <\/p>\n","protected":false},"featured_media":1889,"template":"","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"class_list":["post-2585","info-capsule","type-info-capsule","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>R\u00e9gimes d&#039;\u00e9coulement erratiques ou persistants - Rivi\u00e8res Arythmiques<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rivieresarythmiques.ca\/fr\/apprendre\/info-capsules\/regimes-decoulement-erratiques-ou-persistants\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R\u00e9gimes d&#039;\u00e9coulement erratiques ou persistants\" \/>\n<meta property=\"og:description\" content=\"Les hydrologues ont r\u00e9cemment cr\u00e9\u00e9 deux nouveaux qualificatifs pour d\u00e9crire les fluctuations du d\u00e9bit des cours d\u2019eau sur le long terme (c\u2019est-\u00e0-dire sur plusieurs ann\u00e9es). Les r\u00e9gimes persistants sont ceux dans lesquels les valeurs de d\u00e9bit quotidiennes ne s\u2019\u00e9cartent pas beaucoup de la moyenne \u00e0 long terme. 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