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Ephemeral gullies: to till or not to till?
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
While the perceived magnitude of ephemeral gully
erosion may be masked after gullies are repaired, the action
of plowing in these channels reduces topsoil thickness and
crop productivity over a much wider area than the ...
Ephemeral gully headcut development and migration in stratified soils
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
The objectives of the current study were: (1) to quantify
the effect of an erosion resistant (ER) soil layer placed at
various depths within a soil profile on headcut development
and migration; and (2) to assess the ...
AnnAGNPS ephemeral gully erosion simulation technology
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
Tillage-induced ephemeral gully erosion has been shown to
be a significant and sometimes dominant source of sediment
within a watershed. An approach has been developed within
AnnAGNPS to assess the impact of conservation ...
Turbulent flow within headcut scour holes in rills and gullies
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
The objectives of the present study were to experimentally determine the time-mean turbulent flow characteristics within fixed-bed models of headcut scour holes typical of upland concentrated flows to assess soil erosion ...
Influence of soil structure, pore-water pressure, and tailwater height on headcut migration in upland concentrated flows
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
The primary
objective of this study was to determine the impact of soil
texture, soil pore-water pressure, and tailwater height on
scour hole dimensions, migration rate and sediment yield in
headcuts migrating under steady ...