本研究搜集2001-2002年及2007年內政部一等一級及一等二級精密水準測量資料，擷取通過台灣北部及雪山山脈之3條水準測線資料，以分析此區域之地殼變形。同時也結合內政部1995年～2005年GPS觀測資料成果建立二維斷層模型。
由研究結果顯示：1.水準測線相對水準原點K999之年變化率：基隆-頭城測線在-5.61 mm/yr到2.02 mm/yr之間；關渡-二城測線在-2.70 mm/yr到8.85 mm/yr之間；竹圍-棲蘭測線在-4.91 mm/yr到28.35 mm/yr之間，顯示其年變化率，由西向東增加，與地形起伏成正相關。2.由精密水準測量成果顯示雪山山脈呈現抬昇狀態，且為由北向南增加之趨勢，故推斷此區域碰撞作用仍持續進行，惟在北段抬昇速率較小。3.由二維斷層模型顯示，GPS水平速度分量在A-A’剖面（沿關渡-二城測線）約-5 mm/yr到5 mm/yr，在B-B’剖面（沿竹圍-棲蘭測線）約5 mm/yr到15 mm/yr，顯示其水平變形不顯著。4.在斷層之活動性方面，在水準測線穿越的幾個主要斷層中，以屈尺斷層、石槽斷層、石牌斷層南段有較明顯之垂直變化。在二維斷層模型中，屈尺斷層滑移速率分別為4.6 mm/yr及12.6 mm/yr，石槽斷層為2.2 mm/yr，石牌斷層南段為21.0 mm/yr，顯示其仍持續活動；而金瓜寮斷層、石牌斷層北段及牛鬥斷層滑移速率皆為0 mm/yr，顯示其已不再活動，或其活動較不顯著。

We use precise leveling observations conducted by the Ministry of Interior in 2001-2002 and 2007 to investigate the crustal deformation of the northern Hsuehshan Range. We also combine 1995-2005 GPS observations to establish a two-dimensional dislocation model. We found that: 1. For the vertical velocity relative to the Keelung Leveling Origin K999, the leveling lines from Keelung to Toucheng indicates the vertical rate of -5.61 ~ 2.02 mm/yr. The leveling lines from Guandu to Ercheng show the vertical rate of -2.70 ~ 8.85 mm/yr. The leveling lines from Jhuwei to Cilan present the vertical rate of -4.91 ~ 28.35 mm/yr. Thus, the vertical rate increases from the west to the east; it shows the close relationship between vertical rate and topography. 2. The results of precise leveling data show that the Hsuehshan Range is uplifting, and the rate increases from the north to the south. It shows the area is still in the collision process, although the uplift rate of the northern Hsuehshan Range is small. 3. Two-dimensional dislocation model results show that GPS horizontal velocity in A-A' profile is about -5 ~ 5 mm/yr, and in B-B' profile about 5 ~ 15 mm/yr, it indicates that the horizontal crustal deformation is not significant. 4. Leveling lines going through active faults, such as Chuchin fault, Shihtsao fault and the southern Shihpai fault have obvious vertical crustal deformation. Two-dimensional dislocation model results show that Chuchin fault has slip rates of 4.6 mm/yr and 12.6 mm/yr, the Shihtsao fault has a slip rate of 2.2 mm/yr, the southern Shihpai fault has a slip rate of 21.0 mm/yr, it means these faults are active. The Chinkualiao fault, the northern Shihpai fault and the Niutou fault are not active, or the activity is not significant.

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