Why is the difference between the Wusong elevation and the 85 Yellow Sea elevation different at diff

Caused by the sinking variables of the ground, including the cause of the measurement error!

Elevation of the Yellow Sea. The difference with the elevation of Wusong is meters. The elevation of the Yellow Sea was approved on September 4, 1956 by the People's Republic of China Geodetic Survey Law (Draft), and the first time to establish a national elevation datum for the wide-limb, called the "1956 Yellow Sea Elevation System", referred to as the "Yellow Sea Base".

The traditional method of establishing an elevation datum is to establish a tide gauge station at one (or more) suitable locations along the coast, and record the sea level height of the tide gauge station for many years.

Based on the long-term retrospective observation data and combined with the tidal cycle of the sun and the moon, the mean sea level of the region is calculated by the low-pass filtering method, and the mean sea level is used as the starting surface of the local elevation of a certain country or region, so as to form the local verticaldatum, and it is considered that the mean sea level coincides with the geoid at the elevation datum point.

The difference between the elevation of the Yellow Sea and the elevation of Wusong is meters.

1. The elevation of the Yellow Sea was approved on September 4, 1956 by the People's Republic of China Geodetic Survey (Draft), and the first time the national elevation was established, called the "1956 Yellow Sea Elevation System", referred to as the "Yellow Sea Base".

2. "Wusong Elevation" is an elevation system established by using the sea surface determined by the lowest tide level measured by the Wusongkou tide gauge station in Shanghai in 1871 and 1900 as the datum.

Wusong Zero Point and Wusong Elevation System: In the tenth year of Xianfeng in the Qing Dynasty (1860), the Customs Inspection Department established a signal station in Zhanghuabang on the west bank of the Huangpu River, set up a water gauge to observe the water level. In the ninth year of Guangxu (1883), the Patrol Division used the lowest water level measured at the Zhanghuabang signal station from the tenth year of Xianfeng to the ninth year of Guangxu as the zero point of the water survey.

Later, in the 26th year of Guangxu, according to the water level data observed at the station from the 10th year of Tongzhi to the 26th year of Guangxu (1871 1900), the elevation slightly lower than the lowest water level was established as the zero point of the water survey. And officially determined as Wusong zero point (. The elevation calculated by the zero point of Wurangyansong is called the Wusong elevation system, and Shanghai has always used this system. In 1951, the Ministry of Water Resources of East China stipulated that the level measurement in East China was temporarily based on the Wusong zero point as the starting point of elevation.

The base difference between the Wusong elevation system and the Yellow Sea elevation system in 1956. In 1953, the Jiangsu Provincial Department of Water Resources used precision leveling methods to measure three horizontal routes, including the Shesu Line (Sheshan-Suzhou), the Shegao Line (Sheshan-Jinsiniangqiao-Gaoqiao-Zhanghuabang) and the Shezhang Line (Sheshan-Zhanghuabang), and the observation height difference was included in the elevation control network in East China, and participated in the 1957 precision leveling network adjustment in southeast China hosted by the State Administration of Surveying and Mapping.

The elevation of the leveling point after the adjustment is the 1956 Yellow Sea elevation system, and the Sheshan leveling base point has both the Yellow Sea elevation (m) and the Wusong elevation (m), and the difference between the two is meters, that is, the base surface of the Wusong elevation system in Shanghai is lower than the base surface of the Yellow Sea elevation system in 1956, and the difference between the two elevation values at the same point will be slightly different in the area far away from Shanghai.

The relationship between Wusong and the waste of the Yellow River, the Yellow Sea, and the Eighth Five-Year Plan reference point:

1. Wusong = waste Yellow River +.

2. Wusong = Yellow Sea +.

3. Wu Song = 85 benchmark +.

The difference between the elevation of the Yellow Sea and the elevation of Wusong is meters. The elevation of the Yellow Sea was approved on September 4, 1956, and the "Geodetic Survey Law of the People's Republic of China (Draft)" was approved for trial implementation, and the national elevation datum was established for the first time, called the "1956 Yellow Sea Elevation System" letter draft, referred to as "Yellow Book Shouting Sea Base Surface".

The sea surface determined by the lowest tide level measured by the Wusongkou tide gauge station in Shanghai in 1871 and 1900 was used as the datum, and the elevation system established was called "Wusong Huaxiao Elevation System".

The difference between the elevation of the Yellow Sea and the elevation of Wusong is meters. On September 4, 1956, the Yellow Sea Elevation Slowing Liquid was approved for the trial implementation of the "Geodetic Survey Method (Draft) of the People's Republic of China", and the national elevation datum was established for the first time, called the "1956 Yellow Sea Elevation System", referred to as the "Yellow Sea Base".

The sea surface determined by the lowest tide level measured by the Wusongkou tide gauge station in Shanghai in 1871 and 1900 was used as the datum, and the elevation system established was called the "Wusong elevation system".

1. How much is the difference between the elevation of the Yellow Sea and the elevation of Wusong?

2. How much higher is the elevation of the Yellow Sea than the elevation of Wusong?

3. Is the elevation of Wusong the same as the elevation of the Yellow Sea?

4. What is the difference between the elevation of the Yellow Sea and the elevation of Wusong?

1.The difference between the elevation of Huanghai Gaozai and Wusong is 924 meters.

2.The elevation of the Yellow Sea was approved on September 4, 1956 by the People's Republic of China Geodetic Survey Law (Draft), and the first national elevation datum was established, called the "1956 Yellow Sea Elevation System", referred to as "Tanqi Lease Yellow Sea Base".

3.The sea surface determined by the lowest tide level measured by the Wusongkou tide gauge station in Shanghai in 1871 and 1900 was used as the datum, and the elevation system established was called the "Wusong elevation system".

1. Wu Li's elevation datum" "1956 Yellow Sea elevation datum" m) 2, "Wu Li's elevation datum" "1985 national elevation datum" m) 3, "Wu Li's elevation datum" "Pearl River elevation datum" m) 4, "1956 Yellow Sea elevation" "1985 national elevation datum" m) 5, "1956 Yellow Sea elevation" "Wu Li's elevation datum" m) 6, "1956 Yellow Sea elevation" "Pearl River elevation datum" m) The Yellow Sea elevation was approved on September 4, 1956, *** approved the trial implementation of the The Geodetic Survey of the People's Republic of China (Draft) established a national elevation datum for the first time, called the "1956 Yellow Sea Elevation System", referred to as the "Yellow Sea Base".

The elevation of Wusong adopts the sea surface determined by the lowest tide level measured by the Wusongkou tide gauge station in Shanghai in 1871 and 1900 as the datum, and the elevation system established is called "Wusong elevation system".