⛰️ A raised area 🌊 Rising water 📈 A sudden increase

upswelling

6.2

A rise of water, lava, or other material from below toward the surface

noun
/ˈʌpˌswɛlɪŋ/

: afloramiento

Then an upswelling pushed her face free for another peek and a half swallow of air mixed with foam.

Examples

There was a noticeable upswelling of water in the lake after the heavy rain.
The upswelling of emotions made her realize how much she loved him.
The upswelling of support for the environmental movement has been inspiring to see.

Synonyms

rise

vsupswelling

125 2.4

A small upward slope in land or a surface

is specific about bringing things up from below not just elevation

outpouring

vsupswelling

42 4.2

A sudden large flow, for example of water, or a strong expression of feeling

focuses on rising from below not just outward expression

upwelling

vsupswelling

Specialized

1 6.0

An upward movement of water or gas from below to the surface

is the general term for rising that often brings things up

uprush

vsupswelling

1 7.7

A sudden strong rise of feeling or of liquid like water

is broader and not limited to sudden force

upflow

vsupswelling

Specialized

1 4.8

An upward movement of air or water

is the general rising which may include flows or surges

upsurgence

vsupswelling

8.8

A sudden upward movement of water or gas from underground

focuses on general rise that may bring things up

upswell

vsupswelling

6.8

A sudden upward movement of water that can flood land

is the more general rising that can be gradual or sudden

upcurrent

vsupswelling

8.1

A flow that moves upward in the air or toward the start of a river

is the common term for any upward movement toward the surface

outpour

vsupswelling

5.7

A sudden large flow of feelings or help from many people

emphasizes upward origin from below rather than general outflow

inpouring

vsupswelling

Archaic

7.8

A large flow of people, things, or feelings into a place

is about upward movement from below toward the surface not inward flow

How Intense

eruption

4 4.3

upswelling

6.2

surge

143 4.2

rise

125 2.4

seepage

7 5.7

Surface Forms

upswelling singular

upswellings plural

Morphology

upswelling = upswell (transparent) = up + swell + ing

The word 'upswelling' is transparently derived from 'upswell' + 'ing', indicating a rising action.

Etymology

Upswelling combines up and swell, with swell meaning 'to rise'. So an upswelling is something that rises toward the surface, like cold ocean water or a feeling coming up inside you.