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Beach-face slopes from satellite-derived shorelines along SE Australia and California

<p>This repository contains the data described in Vos, K., Harley, M. D., Splinter, K. D., Walker, A., &amp; Turner, I. L. (2020). Beach Slopes From Satellite‐Derived Shorelines.&nbsp;<em>Geophysical Research Letters</em>,&nbsp;<em>47</em>(14), e2020GL088365.</p> <p>There are 2 GEOJSON files in this repository. The coordinate system for both geospatial layers is WGS84 (epsg:4326).</p> <p>1. <strong>slopes_along_transects.geojson</strong>: contains a geospatial layer with cross-shore transects for sandy coastlines along SE Australia and California. Each feature in this layer is a transect (2 point linestring) with the following attributes:<br> &nbsp; - <strong>site_id</strong>: id of the beach in which the transect is located<br> &nbsp; - <strong>id</strong>: id of the individual transect<br> &nbsp; - <strong>orientation</strong>: orientation of the transect in degrees from North (positive clockwise)<br> &nbsp; - <strong>beach slope</strong>: beach-face slope from Mean Sea Level (MSL) to Mean High Water Springs (MHWS)</p> <p><br> 2. &nbsp;<strong>slopes_along_beaches.geojson</strong>: this layer contains sandy beaches instead of transects. For each beach the median slope has been calculated from all the available transects. The following attributes are available:<br> &nbsp; &nbsp; - <strong>id</strong>: id of the beach<br> &nbsp; &nbsp; - <strong>name</strong>: name of the beach in the OpenStreetMap database (if not available &#39;noname&#39;)<br> &nbsp; &nbsp; - <strong>beach_length</strong>: length of the beach in metres<br> &nbsp; &nbsp; - <strong>median_orientation</strong>: beach orientation calculated as the median of the orientations of each transect<br> &nbsp; &nbsp; - <strong>Tide range</strong>: average tidal range (mean high water - mean low water) at each beach based on FES2014 global tide model<br> &nbsp; &nbsp; - <strong>median_slope</strong>: median beach-face slope along the beach based on the estimated beach-face slope along the transects</p> <p>&nbsp;</p>