Y. Finzi1, 2*, A. Babad1, A. Meroz1, N. Harlev1 A B S T R A C T Keywords: <\/strong>Cliff Retreat, Makhteshim Country, Runoff Incorporating the effect of runoff in a regional cliff retreat model of the Makhteshim Country Y. Finzi1, 2*, A. Babad1, A. Meroz1, N. Harlev1 1 Dead Sea and Arava Science Center, Mizpe Ramon 806000, Israel 2 Eilat Campus, Ben-Gurion University of the Negev, Eilat 88100, Israel * Corresponding author: yaron.finzi@adssc.org + 972 8 6539242 A […]<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[],"tags":[],"issuem_issue":[220],"class_list":{"0":"post-5559","1":"article","2":"type-article","3":"status-publish","4":"format-standard","6":"issuem_issue-volume-121"},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.adssc.org\/en\/wp-json\/wp\/v2\/article\/5559","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.adssc.org\/en\/wp-json\/wp\/v2\/article"}],"about":[{"href":"https:\/\/www.adssc.org\/en\/wp-json\/wp\/v2\/types\/article"}],"author":[{"embeddable":true,"href":"https:\/\/www.adssc.org\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.adssc.org\/en\/wp-json\/wp\/v2\/comments?post=5559"}],"version-history":[{"count":1,"href":"https:\/\/www.adssc.org\/en\/wp-json\/wp\/v2\/article\/5559\/revisions"}],"predecessor-version":[{"id":5560,"href":"https:\/\/www.adssc.org\/en\/wp-json\/wp\/v2\/article\/5559\/revisions\/5560"}],"wp:attachment":[{"href":"https:\/\/www.adssc.org\/en\/wp-json\/wp\/v2\/media?parent=5559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.adssc.org\/en\/wp-json\/wp\/v2\/categories?post=5559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.adssc.org\/en\/wp-json\/wp\/v2\/tags?post=5559"},{"taxonomy":"issuem_issue","embeddable":true,"href":"https:\/\/www.adssc.org\/en\/wp-json\/wp\/v2\/issuem_issue?post=5559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n<\/strong>
\n1 Dead Sea and Arava Science Center, Mizpe Ramon 806000, Israel
\n2 Eilat Campus, Ben-Gurion University of the Negev, Eilat 88100, Israel
\n* Corresponding author: yaron.finzi@adssc.org + 972 8 6539242<\/p>\n
\nCliff retreat rate greatly impacts landscape morphology of the Makhteshim Country, and is significant when assessing cliff stability. Estimates of cliff retreat rates provide spatial insights into long-term morphological processes and changes in climate regimes that may have occurred during the past tens to hundreds of thousands of years. Finding datable morphological markers is challenging, and greatly limits geomorphologists’ evaluations of cliff retreat rate in Israel and around the world. We recently developed an analytical model for calculating the relative cliff retreat rate on a regional scale in the Negev, based on spatial topographic and geological data. In this paper we present an improved model which quantifies the effect of flood runoff on local cliff retreat rates. This effect was calculated based on two components:
\n(1) data on the cliff retreat rate at Midreshet Ben-Gurion during the years when enormous quantities of water were artificially drained over the cliff; and (2) morphological analysis of the cliff edge and measured average water influx near the natural waterfalls of Ramat Divshon and near Mitzpe Ramon. The improved model was applied to estimate the retreat rates along major cliffs throughout the Makhteshim Country. While the results emphasize the significant effect of runoff on local cliff retreat rate where runoff drains over the cliff, it is evident that along most of the cliff, runoff does not significantly affect cliff retreat. Our results indicate that waterfalls along such cliffs locally increase cliff retreat rate by up to two or three orders of magnitude, depending on the flux of runoff draining to the cliff. Adding the runoff component to our analytical model enables to map regional cliff retreat rates in a higher detail and precision than ever before, and improves the model’s applicability for analyzing similar cliffs in Israel and around the world.<\/p>\n
\nPublished: <\/strong>March 2020
\n<\/strong>Volume: <\/strong>12(1)
\n<\/strong>Pages: <\/strong>22-31
\nArticle Type: <\/strong>Research article
\nLanguage: <\/span><\/strong>Hebrew<\/span>
\nLink: journal12-1-2.pdf<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"