International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004 Inte 
  
  
Table 1 Han River XiangYang section January-June month 
average water level from 1989 to 1999 (Huang Sea Height/ Average | 62.08 | 62.10 | 61.53 | 60.88 | 60.86 | 60.80 
  
  
  
  
  
  
  
  
  
  
meter) 
Table 3 Han River XiangYang section annual average, 
xi ; ini ater level fi 98C 999 : 
Ye Jan Feb Mar | Apr | May | Jun maximum and minimum water level from 1989 to 1999 (Huang 
Sea Height/ meter) 
  
  
1989 | 61.22 | 61.57 | 61.95 | 62.03 | 62.41 | 62.71 
Ye Average | Max | Min 
  
  
1990 | 61.36 | 61.78 | 61.80 | 62.04 | 62.26 | 62.55 
1989 62.08 | 66.12 | 60.65 
  
  
1991 60.80 | 60.72 | 61.08 | 61.20 | 61.28 | 62.00 
1990 61.85 | 6521 | 60.39 
  
  
1992 60.52 | 60.49 | 60.57 | 61.05 | 61.23 | 61.34 
1991 61.33 | 64.93 | 60.04 
  
  
1993 61.41 | 61.60 | 61.69 | 61.80 | 62.01 | 62.04 
  
1992 61.17 | 62.60 | 60.23 
  
1994 61.07 | 61.08 | 61.20 | 61.20 | 61.71 | 61.33 
  
1993 61.61 63.64 | 60.41 
  
1995 | 61.21 | 61.02 | 60.87 | 60.73 | 60.63 | 60.70 
1994 61.20 | 62.82 | 60.40 
  
  
1996 | 61.15 | 60.82 | 60.95 | 60.94 | 61.13 | 61.49 
1995 60.93 | 62.16 | 60.48 
  
  
1997 61.55 | 61.21 | 61.07 | 61.25 | 61.38 | 61.18 
1996 61.48 | 65.65 | 60.56 
  
  
1998 59.92 | 59.87 | 60.12 | 60.56 | 60.95 | 60.97 
1997 60.97 | 62.14 | 60.07 
  
  
1999 60.37 | 60.39 | 60.44 | 60.41 | 60.63 | 60.51 
1998 61.04 | 65.07 | 59.78 
  
  
Average | 60.96 | 60.96 | 61.07 | 61.20 | 61.42 | 61.53 
  
  
  
  
  
  
  
  
1999 60.41 61.28 | 60.00 
  
  
Table 2 Han River XiangYang section Jul-December month 
average water level from 1989 to 1999 (Huang Sea Height/ Average | 61.27 | 63.78 | 60.27 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
meter) 
7 Form above table, it could be calculated that: 
Ve Jul Aug | Sep | Oct | Nov | Dec 1. Rainy season average water level is 61.81m. sea: 
2. Dry season average water level is 60.89m. 
> 47 | 60.98 | 61.07 3. Midst season average water level is 61.23m. 
1989 63.71 | 62.89 | 62.87 | 61. 0.98 : 4. The maximum water level is 66.12, but in that time has no rain 
image because it occurred in 1989. The secondly higher 
1990 | 63.47 | 62.49 | 61.93 | 61.02 | 60.79 | 60.71 water level used to be replacement that is 65.65m. mid 
The minimum water level is 59.78m 
1991 62.61 | 62.65 | 61.87 | 60.80 | 60.52 | 60.37 Dry 
3.2 Area of sand beach measure 
met 
19926205 61061 61 A0 PIL 168 61.27 16103 The area of dry season and midst season is obtained after > 
: processing image whose water level is dry, midst and rainy met 
1993 61.95 | 62.08 | 61.97 | 61.10 | 60.88 | 60.73 season. But in this experiment, the maximum area can't be 
obtained because lacks of satellite image. The next picture is 
1994 | 61.84 | 61.97 | 60.98 | 60.60 | 60.64 | 60.73 emerge area of island in rainy, midst and dry season: 
1995 | 60.88 | 61.06 | 61.00 | 61.06 | 61.04 | 61.00 It is 
be 1 
1996 | 62.06 | 62.46 | 61.51 | 61.13 | 62.55 | 61.52 he 
of r 
‘ can 
1997 | 61.25 | 61.33 | 60.71 | 60.31 | 60.22 | 60.19 E 
thou 
1998 | 62.30 | 63.65 | 62.31 | 60.78 | 60.51 | 61.41 wat 
basi 
1999 | 60.72 | 60.61 | 60.31 | 60.29 | 60.10 | 60.09 
  
  
  
  
  
  
  
  
  
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