v.

become steeper

"The mountain side has steepened"

make steeper

"The landslides have steepened the mountain sides"

Steepened structures in equatorial spread F : 2. Theory
Steepened Magnetosonic Waves at Comet Giacobini‐Zinner
Steepened structures in equatorial spread F: 1. New observations
On the role of steepened structures and drift waves in equatorial spread F
Bubbles generated from wind-steepened breaking waves: 1. Bubble plume bubbles
Parametric instabilities near the critical density in steepened density profiles
Phase‐steepened Alfvén waves, proton perpendicular energization and the creation of magnetic holes and magnetic decreases: The pon...
Sub-wavebase cross-bedded grainstones on a distally steepened carbonate ramp, Upper Miocene, Menorca, Spain
Local generation of electrostatic bursts at comet Giacobini-Zinner: Modulation by steepened magnetosonic waves
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