sụt lún
Definition
Noun (Geography, Geology):
- Subsidence, land subsidence: A gradual sinking or downward settling of the Earth's surface with little or no horizontal motion. This is often caused by natural processes like soil compaction, dissolution of underlying rocks, or human activities such as groundwater extraction.
Verb:
- To subside, to sink down: The act of an area of land gradually sinking or caving in.
Usage Examples
Noun:
- Tình trạng sụt lún đất đang đe dọa nhiều khu vực ven biển. (Land subsidence is threatening many coastal areas.)
- Các chuyên gia đang nghiên cứu nguyên nhân của vụ sụt lún. (Experts are studying the cause of the subsidence.)
Verb:
- Mặt đường đã sụt lún sau trận mưa lớn. (The road surface subsided after the heavy rain.)
- Nền nhà có thể bị sụt lún nếu nền móng yếu. (The house floor can sink if the foundation is weak.)
Advanced Usage
"sụt lún bề mặt": surface subsidence.
- Hoạt động khai thác mỏ gây ra sụt lún bề mặt. (Mining activities cause surface subsidence.)
"sụt lún do hóa thạch" (karst subsidence): Subsidence caused by the dissolution of soluble rocks like limestone, leading to sinkholes.
Variants and Related Words
Lún (v): to sink, to settle. Often used interchangeably with "sụt lún" but can imply a slower, more even settling.
- Công trình bị lún theo thời gian. (The structure settled over time.)
Sụt (v): to drop, to fall down, to decrease. Often combined with other words to indicate a collapse or drop.
- Giá cả bị sụt giảm. (Prices dropped.)
Synonyms
- Subsidence: the gradual caving in or sinking of an area of land.
- Settling: the slow sinking of a structure or the ground.
- Caving in: a more sudden collapse.
Related Terms and Concepts
Sinkhole: A hole in the ground caused by a collapse of the surface layer, often a result of subsidence.
- Một hố sụt lớn xuất hiện giữa đường. (A large sinkhole appeared in the middle of the road.)
Nền đất yếu: weak subsoil, a common contributing factor to subsidence.
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(địa lý) Depression
