Hjulström curve

The Hjulström curve, named after Filip Hjulström (1902–1982), is a graph used by hydrologists and geologists to determine whether a river will erode, transport, or deposit sediment.

Version

v1 · 2026-09-28 · History

Domain-specific #

9883

Domain group

Natural Sciences

Origin domain

Geology & Earth Sciences

Subdomains

Fluvial Geomorphology, Sediment Transport → Geology & Earth Sciences

Core Idea

Hjulström curve is treated here as the recurring fluvial geomorphology identity summarized by this source-grounded definition: The Hjulström curve, named after Filip Hjulström (1902–1982), is a graph used by hydrologists and geologists to determine whether a river will erode, transport, or deposit sediment. The Hjulström curve, named after Filip Hjulström (1902–1982), is a graph used by hydrologists and geologists to determine whether a river will erode, transport, or deposit sediment. It was originally published in his doctoral thesis "Studies of the morphological activity of rivers as illustrated by the river Fyris. " in 1935.

Scope of Application

• Documented setting. The Hjulström curve, named after Filip Hjulström (1902–1982), is a graph used by hydrologists and geologists to determine whether a river will erode, transport, or deposit sediment.

• Documented setting. The upper curve shows the critical erosion velocity in cm/s as a function of particle size in mm, while the lower curve shows the deposition velocity as a function of.

• Documented setting. Among the drawbacks of this curve are that it does not take the water depth into account and more importantly, that it does not show that sedimentation is caused by flow.

• Documented setting. Much work was done on river sediment transport formulae in the second half of the 20^th century and that work should be used preferably to Hjulström's curve.

• Documented setting. It was originally published in his doctoral thesis "Studies of the morphological activity of rivers as illustrated by the river Fyris. " in 1935.

Clarity

A clear use of Hjulström curve names the carrier, the operative relation, and the conditions under which the source treats the identity as present. The minimal definition is The Hjulström curve, named after Filip Hjulström (1902–1982), is a graph used by hydrologists and geologists to determine whether a river will erode, transport, or deposit sediment.

Manages Complexity

Hjulström curve compresses multiple fluvial geomorphology details into a stable diagnostic relation. The source shows both the central mechanism—it was originally published in his doctoral thesis "Studies of the morphological activity of rivers as illustrated by the river Fyris. " in 1935.—and the practical consequence—the upper curve shows the critical erosion velocity in cm/s as a function of particle size in mm, while the lower curve shows.

Abstract Reasoning

1. Type the carrier. Identify the fluvial geomorphology entities to which the claim applies.
2. State the relation. Use the source-grounded identity: The Hjulström curve, named after Filip Hjulström (1902–1982), is a graph used by hydrologists and geologists to determine whether a river will erode, transport, or deposit sediment.
3. Check operation and conditions. The critical velocity for deposition, on the other hand, depends on the settling velocity, and that decreases with decreasing grainsize.
4. Demand recognition evidence.

Knowledge Transfer

Within the home domain. Knowledge about Hjulström curve transfers literally when a new case preserves the same carrier type, relation, and recognition test. The Hjulström curve, named after Filip Hjulström (1902–1982), is a graph used by hydrologists and geologists to determine whether a river will erode, transport, or deposit sediment. The upper curve shows the critical erosion velocity in cm/s as a function of particle size in mm, while the lower.

Relationships to Other Abstractions

Current abstraction Hjulström curve Domain-specific

Parents (1) — more general patterns this builds on

• Hjulström curve presupposes Sediment Transport Domain-specific

  Hjulström curve structurally presupposes Sediment Transport: The Hjulström curve, named after Filip Hjulström (1902–1982), is a graph used by hydrologists and geologists to determine whether a river will erode, transport, or deposit sediment.

Hierarchy paths (6) — routes to 6 parentless roots

• Hjulström curve → Sediment Transport → Selective Propagation → Propagation

Show alternative paths (5)

Neighborhood in Abstraction Space

Hjulström curve sits in a sparse region of the domain-specific corpus (79^th percentile for distinctiveness): few abstractions share its structure, so a faithful description tends to retrieve it precisely.

Family — Unclustered & Miscellaneous (2551 abstractions)

Nearest neighbors

• Coastal Sediment Supply — 0.83
• Fluvial sediment processes — 0.83
• River morphology — 0.83
• Glen–Nye flow law — 0.82
• Playfair's law — 0.82

Computed from structural-signature embeddings · 2026-10-08