Snow layer density measuring system and application method

Abstract

The invention aims to easily and conveniently measure snow layer density at high accuracy. A snow layer density measuring system comprises a snow barrel, a sealing end, a leveling end and a weighing instrument, wherein the cross section of the snow barrel is rectangular; the sealing end is located at the bottom end of the snow barrel; the sealing end comprises sealing cloth and a pulling rope; thesealing cloth is located on one side of the bottom end of the snow barrel; the sealing cloth is connected with the pulling rope; the pulling rope passes through the bottom surface of the snow barrel,and extends to the top end of the snow barrel along the other side opposite to the sealing cloth on the snow barrel; when the sealing end is in use, the pulling rope at the top end of the snow barrelis tensioned, and the sealing cloth is inserted into the bottom of the snow barrel horizontally after being stressed to partition accumulated snow inside the snow barrel and the ground; during use ofthe leveling end, the leveling end is pushed into the bottom of the snow barrel to push the internal accumulated snow upwards; the weighing instrument is used for weighing the internal accumulated snow; the snow barrel is made of a transparent material; the outer surface or / and the inner surface of the snow barrel is / are provided with scales for measuring the depth of the accumulated snow and theposition of the leveling end in the snow barrel. The system can be used for weighing accumulated snow of different depths without digging or shoveling of the accumulated snow, and is very easy and convenient to operate.

Description

technical field [0001] The invention relates to the field of scientific research on snow cover, in particular to the measurement of snow layer density at different depths in the scientific data collection of snow cover. Background technique [0002] Snow layer density is an important parameter in snow hydrological models and quantitative remote sensing of snow cover. Therefore, snow density measurement is very important in snow cover scientific research. At present, there are two main types of snow layer density measuring devices, namely Snow Fork snow characteristic analyzer and wedge-shaped snow measuring device. [0003] Snow Fork can measure electrical parameters such as resonance frequency, attenuation and 3-dB bandwidth, and use these measurements to accurately calculate the dielectric constant, and then calculate the snow density through semi-empirical equations. There are at least two problems: 1. The density of the snow layer is converted from a variety of electric...

AI Technical Summary

Problems solved by technology

There are at least two problems: 1. The density of the snow layer is converted from a variety of electrical parameters, and the transmission error of the measurement results is large; 2. When the humidity of the snow is high and the temperature is low, the error of the measured electrical parameters is large, resulting in The calculated snow layer density is inaccurate; 3. The cost of the instrument is high, and it is not easy to carry in the field in alpine mountainous areas

There are at least two problems: 1. When the snow is excavated, it is not necessarily close to the wedge-shaped snow measuring device, and there is a gap between the two, resulting in a certain error between the volume of the excavated snow and the volume of the wedge-shaped snow measuring device; 2. The snow accumulation When excavated, the snow density changes due to pressure, resulting in inaccurate calculated snow layer density

[0005] In addition, the above two snow layer density measurement devices need to dig pits and vertical sections when using them. The measurement process is time-consuming, labor-intensive and error-prone, and there is an urgent need for simple, high-precision snow layer density measurement devices.

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