<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Thanks Aslam for the clarification</div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><div>Dr Wisemen Chingombe ( PhD, MSc, BSc (Hons) with Education)<br>Department of Geography and Environmental
Science<br>Office No. 74, First Floor Livingstone Building<br>Faculty of Science
and Agriculture<br>University of Fort Hare, Alice Campus<br>Private Bag
X1314<br>Alice 5700<br>Telephone: +27 40 602 2671</div><div>Fax: +27 86 758 4033<br>Mobile: +27 79 811 1977</div><div><br>"<b><i><font face="comic sans ms, sans-serif">I may not be where I need to be but I thank God I am not where I used to be"</font></i></b></div></div></div></div></div>
<br><div class="gmail_quote">On 6 November 2014 12:20, Aslam Parker <span dir="ltr"><<a href="mailto:aparker@ruraldevelopment.gov.za" target="_blank">aparker@ruraldevelopment.gov.za</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi<br>
<br>
<br>
ASTER accuracy is less and there are many anololies and spikes, ASTER uses imagery wheras SRTM 30m is radar based and is far more penetrating. The SRTM data has gone through many iterations of editing/cleaning<br>
<br>
>>> "E. Ndava" 11/06/14 12:08 PM >>><br>
<span>Thanks for the info.<br>
<br>
Still on that. In layman terms how does this DEM compare to the ASTER 30m<br>
DEM (<a href="https://www.jspacesystems.or.jp/ersdac/GDEM/E/4.html" target="_blank">https://www.jspacesystems.or.jp/ersdac/GDEM/E/4.html</a>).<br>
<br>
Regards.<br>
<br>
On 6 November 2014 11:55, Aslam Parker<br>
</span><span>wrote:<br>
<br>
> Please note that the recently made available SRTM 30m DEM data can either<br>
> be downloaded from <a href="http://earthexplorer.usgs.gov/" target="_blank">http://earthexplorer.usgs.gov/</a>, or you can contact NGI<br>
> Cape town or Pretoria Office for a copy of the data. It is 4Gb large for<br>
> South Africa.<br>
><br>
><br>
><br>
><br>
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