Study on isotopic indicators of saline water intrusion processes in the front of Mihe alluvial-pluvial fan,Laizhou Bay
MA Jian
WANG Longchang
LIU Yinghao
LI Mingbo
XU Jinxin
JIANG Bing
WU Zhen
LIU Mingming
Abstract：The identification of saltwater intrusion process is of great significance to the prevention and control of saltwater intrusion disasters and the sustainable utilization of groundwater resources in coast-al areas.In order to study the interaction law of saline and fresh water in different depths of aquifers in the front edge of the Mihe alluvial fan,the recharge source,hydrochemical characteristics and evolution law of groundwater in the study area were discussed through the test and characteristic analysis of hydrochemical and stable isotope samples of hydrogen and oxygen.The saltwater intrusion process was effectively identified.The results showed that the main recharge source of groundwater in the study ar-ea was atmospheric precipitation.The groundwater chemical field on the plane of the study area was obvious zonation,showing a change rule from salt water to fresh water from north to south.The de-gree of salt water intrusion in different depths of aquifers in the vertical direction was different and changes obviously with seasons.According to the results of environmental isotope testing,compared with the dry season,the confined water in the salt water distribution area in the wet season was charac-terized by heavy isotope enrichment,which may be caused by the increase of salt water intrusion caused by the rise of groundwater level in the north.
Keywords：alluvial fangroundwatersaltwater intrusionhydrochemical characteristicshydrogen and oxygen isotope characteristics
Publication Date：2026-02-25
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 34-42 )