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Fluctuation Survey of Exposed Rock and Ice Sheet : Outline

  • Data outline

Survey for Monitoring Movement of Ice Sheet

General Description

The surveys for monitoring movement of ice sheet are performed for the purpose of detecting movements of the ice sheet. First started by the 38th JARE (1996) using the ice sheet flow measurement point (S16), 19 km east of Syowa station, established by the National Institute for Polar Research in 1992. Two new points, P50 (S15) and S17, were established by the 39th JARE(1997), and are still in use constantly.

Survey Point for Monitoring Movements of Ice Sheet

Fluctuation Survey of Exposed Rock and Ice Sheet S16 surrounding area


Variation Graph

The coordinates of P50 (S15), S16, and S17 were determined by GNSS baseline analysis using GAMIT/GLOBK software based on the IGS station at Syowa station (SYOG).

*The antenna is installed on the top of a pole and the pole has been extended in a step-by-step manner in oreder to avoid covering accumulated snow.
*Antenna reference point is the top of the pole.

P50 point (S15)
The location of P50(S15)point was determined using detailed base line analysis based on the IGS point at Syowa Station(SYOG). By Finding the relative position, fluctuation and fluctuation vectors are shown.

P50(Horizontal Fluctuation)


P50(Ellipsoidal Height)


S16 point
The location of S16point was determined using detailed base line analysis based on the IGS point at Syowa Station(SYOG). By Finding the relative position, fluctuation and fluctuation vectors are shown.

S16(Horizontal Fluctuation)


S16(Ellipsoidal Height)


S17 point The location of S17point was determined using detailed base line analysis based on the IGS point at Syowa Station(SYOG). By Finding the relative position, fluctuation and fluctuation vectors are shown.
The point was re-established on December 2001 and the graph is displayed separately before and after re-establishment.

S17(Horizontal Fluctuation)


S17(Ellipsoidal Height)


Survey of Exposed Rock Areas

General Description

Main objective of the survey of exposed rock areas is to detect post-glacial rebound (uplift phenomenon caused by deglaciation). Data is collected from repeat surveys with GNSS (GPS) set up by the 37th JARE (1995) on the control point in Yukidori Zawa, Langhovde, 27 km south of Syowa station.
An unmanned continous GNSS (GPS) observation site (LANG) was set up on the 41st JARE (1999). To ensure a stable power supply, we initially used wind and solar powered generators for recharging the batteries. Other enhancements such as the addition of a capacitor were made on the 46th JARE (2006), which are still operating today.

Permanent GNSS (GPS) Observation Site


Variation Graph

 The coordinates of the permanent GNSS (GPS) observation site (LANG) were determined by baseline analysis using GAMIT/GLOBK software on the IGS station at Syowa station (SYOG).The variation graph of the coordinates shown is from after the installation of the permanent GNSS (GPS) observation site.

Permanet GNSS(GPS) Observation Point(LANG) Fluctuation Graph


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