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Transverse (SDT_3)

DGIF baseline 2026-1, the latest. Earlier baselines: timemap.

RDF: sdt_3.ttl

Name

transverse

Attribute

SDT Sand Dune Type

Definition

Long, relatively straight dunes, oriented perpendicular to the direction of the wind and consisting of accumulations of loose, well-sorted, very fine to medium sand in ridges that have a gentle stoss (upwind) slope and a steep slip face on the lee slope.

Description

Although appearing similar to linear dunes, they differ from linear dunes in that the two flanks of a transverse dune have different, rather than similar, angles of slope; the gentler upwind slope is composed of firmly packed sand and the steeper lee (avalanche) slope is soft and loose sand. Transverse dunes also migrate laterally, toward the next dune ridge, instead of longitudinally down the long axis of the ridge.

Synonyms

Lateral

Accepted

2013-10-18

Allowed for

• DB170 Sand Dunes

Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.