Spatial differentiation and dynamic mechanism of micro-geomorphology based on acoustic spectrum data of the Huanghe (Yellow) River Delta

Ping LI; Yongde JIN; Wei GAO; Xiaolong ZHAO

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Spatial differentiation and dynamic mechanism of micro-geomorphology based on acoustic spectrum data of the Huanghe (Yellow) River Delta

Geology | Updated：2024-10-12

- Spatial differentiation and dynamic mechanism of micro-geomorphology based on acoustic spectrum data of the Huanghe (Yellow) River Delta
- Spatial differentiation and dynamic mechanism of micro-geomorphology based on acoustic spectrum data of the Huanghe (Yellow) River Delta
- 海洋湖沼学报(英文) 2023年41卷第6期页码：2077-2089
- Affiliations：
  
  1. First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
  2. Key Laboratory of Coastal Science and Integrated Management of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
- Author bio：
  
  lp@fio.org.cn
- Funds：
  
  the General Program of Natural Science Foundation of Shandong Province(ZR2020MD063);the Youth Program of Natural Science Foundation of Shandong Province(ZR2013DQ025);the National Natural Science Foundation of China and Shandong Province Joint Funds(U1706214)
- DOI：
  中图分类号：
- 收稿：2022-07-31，
  
  录用：2022-09-13，
  
  网络首发：2022-10-28，
  
  纸质出版：2023-11-01
- Accepted：
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Spatial differentiation and dynamic mechanism of micro-geomorphology based on acoustic spectrum data of the Huanghe (Yellow) River Delta[J]. 海洋湖沼学报(英文), 2023,41(6):2077-2089.

LI Ping,JIN Yongde,GAO Wei,et al.Spatial differentiation and dynamic mechanism of micro-geomorphology based on acoustic spectrum data of the Huanghe (Yellow) River Delta[J].Journal of Oceanology and Limnology,2023,41(06):2077-2089.
Spatial differentiation and dynamic mechanism of micro-geomorphology based on acoustic spectrum data of the Huanghe (Yellow) River Delta[J]. 海洋湖沼学报(英文), 2023,41(6):2077-2089. DOI：

LI Ping,JIN Yongde,GAO Wei,et al.Spatial differentiation and dynamic mechanism of micro-geomorphology based on acoustic spectrum data of the Huanghe (Yellow) River Delta[J].Journal of Oceanology and Limnology,2023,41(06):2077-2089. DOI：

摘要

Abstract

Submarine micro-geomorphology is a geo-morphological type occurring in shallow and surface areas of seabed. The combined relationships and distribution of the micro-geomorphology indirectly reflect coupling relationships among the sediment deposition

dynamic environment

and geomorphologic evolution. Spatial differentiation and dynamic changes in micro-geomorphology were studied based on acoustic data interpretation from a wide range (3 200 km

) of the Huanghe (Yellow) River delta (HRD). The combination of the sub-bottom profiler and the side-scan sonar methods allowed for the identification of submarine shallow micro-geomorphologic types

as well as their scale and spatial distributions. There were seven typical micro-geomorphologic features in the shallow and surface areas of the HRD

including buried ancient channels

stratigraphic disturbances

scour troughs

sand waves

pits

erosional remnants

and sand spots. The coupling and superposition of the sediment

sediment characteristics

seabed scouring and silting

and hydrodynamic conditions of the Huanghe River had combined effects on the patterns of micro-geomorphologic types

characteristics

and ranges. From the perspective of acoustic profile interpretations

the scale

range

and spatial locations of the micro-geomorphology in the HRD revealed seasonal variation characteristics

and the spatial distributions displayed significant regional differentiation characteristics. In addition

strong stra

tigraphic disturbances and areas with densely distributed buried ancient channels reflected the activity and instability of the submarine shallow strata. Through the interpretation of the sub-bottom profile detection data

the diversion processes of the flow paths in the lower reaches of the Huanghe River were obtained for a certain historical period in the coastal waters of the HRD. This study further clarified the relationships between the micro-geomorphologic features and spatial combinations

which is important for research on micro-geomorphologic features and their dynamic mechanisms.

关键词

Keywords

references

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