• 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16

Some erosion in the Altar Valley

Some erosion in the Altar Valley
'+ '
'+ '
'+ '
'+ '
'+ '
'+ '
', tError: 'The image could not be loaded.' }, gallery: { enabled: true, tPrev: 'Previous (Left arrow key)', tNext: 'Next (Right arrow key)' }, iframe: { markup: '
'+ '
'+ ''+ '
', patterns: { dailymotion: { index: 'nc-mfp-dailymotion', id: function(url) { var arr = url.split('#nc-mfp-dailymotion-'); return arr[1]; }, src: '//www.dailymotion.com/embed/video/%id%?autoplay=1' }, instagram: { index: 'nc-mfp-instagram', id: function(url) { var arr = url.split('#nc-mfp-instagram-'); return arr[1]; }, src: '//instagram.com/p/%id%/embed/?autoplay=1' }, rutube: { index: 'nc-mfp-rutube', id: function(url) { var arr = url.split('#nc-mfp-rutube-'); return arr[1]; }, src: '//rutube.ru/video/embed/%id%?autoStart=true' }, vimeo: { index: 'nc-mfp-vimeo', id: function(url) { var arr = url.split('#nc-mfp-vimeo-'); return arr[1]; }, src: '//player.vimeo.com/video/%id%?autoplay=1' }, vine: { index: 'nc-mfp-vine', id: function(url) { var arr = url.split('#nc-mfp-vine-'); return arr[1]; }, src: '//vine.co/v/%id%/embed/simple?autoplay=1' }, wistia: { index: 'nc-mfp-wistia', id: function(url) { var arr = url.split('#nc-mfp-wistia-'); return arr[1]; }, src: '//fast.wistia.net/embed/iframe/%id%?autoplay=1' }, youtube: { index: 'nc-mfp-youtube', id: function(url) { var arr = url.split('#nc-mfp-youtube-'); return arr[1]; }, src: '//www.youtube.com/embed/%id%?autoplay=1' } }, srcAction: 'iframe_src' }, callbacks: { imageLoadComplete: function() { var self = this; setTimeout(function() { self.wrap.addClass('mfp-image-loaded'); }, 16); }, close: function() { this.wrap.removeClass('mfp-image-loaded'); } }, closeBtnInside: false, closeOnContentClick: true, midClick: true }); }); } NC_MFP_call();
  • Contest: 2020 Best Story Map
  • Submitter: Robert Davis
  • Email: robert@thequietcreek.com
  • Authors: Robert Davis & Rudy Stricklan
  • Organization: Quiet Creek
  • Description: This analytic storymap describes finding, modeling, and displaying erosion in the Altar Valley, Arizona. Using analysis of lidar surfaces combined with classic aerial photographic interpretation, we were able to locate over 24,000 erosion headcuts in the Valley. Armed with those headcut locations, we predicted other headcut locations using multivariate logistic regressions. We display those headcuts and their incised channels using a combination of layers, 3D scenes, and physical 3D printed models. We hope this storymap helps with understanding erosion and the GIS techniques used to find, model, and display erosion.
  • Data Sources: Pima county 2016 lidar, FEMA 2019 lidar, Landsat 8, USDA soils (SSURGO), US Census, Erosion control features by Dr. Mary Nichols
  • URL (web address): https://arcg.is/1rjrfn