Undular_bore_Araguari_River-Brazil-USGS-bws00026.jpg
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Summary
| Description |
English:
Description at USGS website
:
" Undular bore and whelps near the mouth of Araguari River , Brazil. View is oblique toward mouth from airplane at approximately 100 ft. altitude. Portion published as Figure 5 in U. S. Geological Survey , Circular 1022, 1988." Note : This undular bore (locally known as pororoca ) is on the Araguari River in the Amapá state in north-eastern Brazil, see w:Tidal bore#South America . The bore propagates from left to right, against the stream of the river current. |
| Date | |
| Source | U.S. Geological Survey Photographic Library |
| Author | USGS: Susan Bartsch-Winkler and David K. Lynch |
Licensing
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This image is in the
public domain
in the United States because it only contains materials that originally came from the
United States Geological Survey
, an agency of the
United States Department of the Interior
. For more information, see
the official USGS copyright policy
.
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