{"id":4585,"date":"2021-03-25T13:27:09","date_gmt":"2021-03-25T13:27:09","guid":{"rendered":"http:\/\/187.189.183.96\/?p=4585"},"modified":"2021-03-25T13:27:42","modified_gmt":"2021-03-25T13:27:42","slug":"que-son-las-sequias","status":"publish","type":"post","link":"https:\/\/atl.org.mx\/index.php\/que-son-las-sequias\/","title":{"rendered":"\u00bfQu\u00e9 son las sequ\u00edas?"},"content":{"rendered":"<p><a href=\"http:\/\/187.189.183.96\/wp-content\/uploads\/2021\/03\/Que_son_las_sequias.jpg\" data-rel=\"penci-gallery-image-content\" ><img fetchpriority=\"high\" decoding=\"async\" class=\"alignleft wp-image-4586 size-medium\" src=\"http:\/\/187.189.183.96\/wp-content\/uploads\/2021\/03\/Que_son_las_sequias-300x278.jpg\" alt=\"\u00bfQu\u00e9 son las sequ\u00edas?\" width=\"300\" height=\"278\" srcset=\"https:\/\/atl.org.mx\/wp-content\/uploads\/2021\/03\/Que_son_las_sequias-300x278.jpg 300w, https:\/\/atl.org.mx\/wp-content\/uploads\/2021\/03\/Que_son_las_sequias-600x555.jpg 600w, https:\/\/atl.org.mx\/wp-content\/uploads\/2021\/03\/Que_son_las_sequias-150x139.jpg 150w, https:\/\/atl.org.mx\/wp-content\/uploads\/2021\/03\/Que_son_las_sequias-768x710.jpg 768w, https:\/\/atl.org.mx\/wp-content\/uploads\/2021\/03\/Que_son_las_sequias-640x592.jpg 640w, https:\/\/atl.org.mx\/wp-content\/uploads\/2021\/03\/Que_son_las_sequias-400x370.jpg 400w, https:\/\/atl.org.mx\/wp-content\/uploads\/2021\/03\/Que_son_las_sequias-367x340.jpg 367w, https:\/\/atl.org.mx\/wp-content\/uploads\/2021\/03\/Que_son_las_sequias.jpg 921w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>Las sequ\u00edas constituyen un fen\u00f3meno natural que se manifiesta como una deficiencia de humedad anormal y persistente, que tiene un impacto adverso en la vegetaci\u00f3n, los animales y las personas.<\/p>\n<p>Las sequ\u00edas son inevitables; impredecibles; sin trayectoria establecida; sin inicio ni t\u00e9rmino bien definidos; recurrentes, mas no c\u00edclicas, y potencialmente catastr\u00f3ficas.<\/p>\n<p>Seg\u00fan sus impactos, estas se clasifican en:<\/p>\n<ul>\n<li>agr\u00edcolas<\/li>\n<li>hidrol\u00f3gicas<\/li>\n<li>meteorol\u00f3gicas<\/li>\n<li>socioecon\u00f3micas<\/li>\n<\/ul>\n<p>En diferentes partes del mundo se emplean \u00edndices e indicadores para medir cuantitativamente la sequ\u00eda. Entre ellos, el m\u00e1s importante para el caso de M\u00e9xico es el Monitor de Sequ\u00eda de Am\u00e9rica del Norte, en el cual participan expertos de M\u00e9xico, Estados Unidos y Canad\u00e1 con el objetivo de describir las condiciones de sequ\u00eda en la regi\u00f3n y generar mapas diagn\u00f3sticos de este fen\u00f3meno.<\/p>\n<p>Las sequ\u00edas son de naturaleza expansiva y pueden afectar potencialmente a varios sectores de la sociedad. Estas se pueden presentar en cualquier momento, en cualquier parte del mundo y persistir durante a\u00f1os.<\/p>\n<p>Entre los problemas que ocasionan se encuentran los siguientes:<\/p>\n<ul>\n<li>escasez de agua<\/li>\n<li>agua de mala calidad<\/li>\n<li>desabasto de agua para la agricultura y la industria<\/li>\n<li>incendios<\/li>\n<li>conflictos transfronterizos (la sequ\u00edas no se detiene en las fronteras estatales o internacionales)<\/li>\n<\/ul>\n<p>Por su naturaleza, las sequ\u00edas ocasionan desastres de progresi\u00f3n lenta, lo cual dificulta el monitoreo de su progresi\u00f3n y la cuantificaci\u00f3n de su impacto.<\/p>\n<p>Seg\u00fan su intensidad, la clasificaci\u00f3n es la siguiente:<\/p>\n<p><strong>D0: Anormalmente seco<\/strong><\/p>\n<ul>\n<li>sequedad de corta duraci\u00f3n (de 1 a 3 a\u00f1os) y leve intensidad<\/li>\n<li>crecimiento lento de cultivos<\/li>\n<li>d\u00e9ficits de agua, recuperaci\u00f3n lenta de los pastizales<\/li>\n<li>riesgo de incendios superior al promedio<\/li>\n<\/ul>\n<p><strong>D1: Sequ\u00eda moderada<\/strong><\/p>\n<ul>\n<li>de 1 a 5 a\u00f1os<\/li>\n<li>bajos niveles en r\u00edos y presas<\/li>\n<li>escasez moderada de agua<\/li>\n<li>se recomiendan restricciones voluntarias en el uso de agua<\/li>\n<li>riesgo alto de incendios<\/li>\n<\/ul>\n<p><strong>D2: Sequ\u00eda severa<\/strong><\/p>\n<ul>\n<li>de 1 a 10 a\u00f1os<\/li>\n<li>probables p\u00e9rdidas de cultivos y \u00e1reas de pastizal<\/li>\n<li>escasez de agua<\/li>\n<li>restricciones en el uso de agua voluntarias u obligatorias<\/li>\n<li>riesgo muy alto de incendios<\/li>\n<\/ul>\n<p><strong>D3: Sequ\u00eda extrema<\/strong><\/p>\n<ul>\n<li>de 1 a 20 a\u00f1os<\/li>\n<li>las p\u00e9rdidas de cultivos y pastizales son comunes<\/li>\n<li>escasez de agua generalizada<\/li>\n<li>imposici\u00f3n de restricciones de uso de agua<\/li>\n<li>riesgo extremo de incendios<\/li>\n<\/ul>\n<p><strong>D4: Sequ\u00eda excepcional<\/strong><\/p>\n<ul>\n<li>de 1 a 50 a\u00f1os<\/li>\n<li>p\u00e9rdidas excepcionales y generalizadas de cultivos y pastizales<\/li>\n<li>escasez de agua en presas, r\u00edos y pozos<\/li>\n<li>medidas de emergencia en restricci\u00f3n de uso del agua<\/li>\n<\/ul>\n<p>Dado que las sequ\u00edas son inevitables, esta herramienta es \u00fatil para la toma de decisiones y la planeaci\u00f3n en los \u00e1mbitos de la agricultura y la industria, la emisi\u00f3n de alertas tempranas y la concientizaci\u00f3n sobre el uso de los recursos h\u00eddricos, con el fin de crear resiliencia ante este fen\u00f3meno.<\/p>\n<p>Fuente: CONAGUA<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Las sequ\u00edas constituyen un fen\u00f3meno natural que se manifiesta como una deficiencia de humedad anormal y persistente, que tiene un impacto adverso&hellip;<\/p>\n","protected":false},"author":1,"featured_media":4586,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[68],"tags":[],"class_list":["post-4585","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-meteorologia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00bfQu\u00e9 son las sequ\u00edas? 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