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Method for determining source of coastal tidal flat silt by utilizing Nd-Sr isotopic tracing

An isotope tracing and isotope technology, applied in the field of helping coastal tidal flat reclamation to determine the source of coastal tidal mud and sand, and can solve problems such as weak

Inactive Publication Date: 2014-12-24
HOHAI UNIV +1
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  • Abstract
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  • Application Information

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Problems solved by technology

However, studies on where the sediments come from, how much the Yangtze River and the Yellow River have contributed, whether the contribution is continuous, whether the pelagic sediments have been imported, and the characteristics of source changes are still relatively weak.

Method used

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  • Method for determining source of coastal tidal flat silt by utilizing Nd-Sr isotopic tracing
  • Method for determining source of coastal tidal flat silt by utilizing Nd-Sr isotopic tracing
  • Method for determining source of coastal tidal flat silt by utilizing Nd-Sr isotopic tracing

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Embodiment Construction

[0029] In order to express the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings.

[0030] see figure 1 , the method provided by the invention utilizing Nd-Sr isotope tracer to determine the source of beach sediment, comprises the following steps:

[0031] Step 1, collect multiple surface sediment samples in the potential source area of ​​sediment;

[0032] Step 2, collect multiple surface sediment samples in the coastal sandy mud in the target area;

[0033] Step 3, put the sample into a beaker, add deionized water, stir, and ultrasonically in a water bath for 10 minutes, then centrifuge, and pour the supernatant to remove the salt;

[0034] Step 4, removing organic matter in the sample;

[0035] Step 5, further removing secondary carbonate in the sample;

[0036] Step 6, the processed sample is dried and ground to below 200 mesh;

[0037] Step 7, take a sample and carry out an isotope anal...

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Abstract

The invention discloses a method for determining the source of coastal tidal flat silt by utilizing Nd-Sr isotopic tracing. The method includes the following steps: collecting multiple surface sediment samples from a potential source area of silt; collecting multiple surface sediment samples from the coastal tidal flat silt of a target area; removing salt in the samples; removing organic matters in the samples; removing secondary carbonate in the samples; levigating the samples after being dried; taking processed samples for isotopic analysis experiments. The method is more reliable than a conventional granularity feature analysis method and a conventional magnetic feature analysis method and simpler than a geochemical feature analysis method and a remote-sensing analysis method. Nd-Sr isotopes are adopted as tracer sources, so that the method has obvious tracing advantages.

Description

technical field [0001] The invention belongs to the technical field of coastal tidal flat reclamation, and in particular relates to a method for determining the source of coastal tidal flat sediment for helping coastal tidal flat reclamation. Background technique [0002] With the continuous growth of population and the rapid development of social economy, my country's land resources are becoming increasingly scarce. Coastal beach reclamation and land expansion are the main ways to alleviate the shortage of my country's land resources. The area of ​​coastal tidal flats in Jiangsu Province ranks first in the country, and its encirclement and development can provide sufficient reserve land resources for the economic development of the province. Because of this, the coastal tidal flat reclamation and development plan of Jiangsu Province came into being. [0003] Obviously, rational planning and development of tidal flats are not only of obvious urgency but also of great econom...

Claims

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Application Information

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IPC IPC(8): G01V9/00
Inventor 饶文波王义刚谭红兵
Owner HOHAI UNIV
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