Portable snow cover density measuring device and method

Abstract

The invention mainly solves the problem of simply and highly precisely measuring snow cover density. A portable snow cover density measuring device comprises a barrel, a snow shovel, a leveling end, and a weighing instrument; when in use, the snow shovel is horizontally inserted into the bottom of the barrel to divide inner snow of the barrel and a ground; when in use, the leveling end is pushed into the bottom of the barrel to push up the inner snow; the weighing instrument is used for weighing weight of the inner snow; the barrel is made of a transaprent material; the outer surface or / and inner surface of the barrel is provided with graduation marks used for measuring snow depth and the position of the leveling end in the barrel. The portable snow cover density measuring device allows snow different depth to be directly measured at a time so as to measure the snow cover density; digging is not required, and operation is simple; since the snow in the barrel bears little stress, the volume and density of the snow are substantially not changed; snow cover density measurement precision is high.

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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