[1] Aline P, Bradley S, Tony H. Ground Deformation Patterns at White Island Volcano (New Zealand) between 1967 and 2008 Deduced from Levelling Data[J]. Journal of Volcanology and Geothermal Research, 2009, 181(3-4):207-218.
[2] Hiroshi P S, Kaoru A, Osamu O. GPS-measured Land Subsidence in Ojiya City, Niigata Prefecture, Japan[J]. Engineering Geology, 2003, 67(3):379-390.
[3] Gabriele B, Flavio B, Marco U. Levelling and GPS Networks to Monitor Ground Subsidence in the Southern Po Valley[J]. Journal of Geodynamics, 2000, 30(3):355-369.
[4] Mahdi M, Yahya D, Thomas R W, et al. Land Subsidence in Mashhad Valley, Northeast Iran:Results from InSAR, levelling and GPS[J]. Geophysical Journal of the Royal Astronomical Society, 2007, 168(2):518-526.
[5] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.国家一、二等测量规范:GB/T 12897-2006[S].北京:中国标准出版社,2006(General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China. Specifications for the First and Second Order Leveling:GB/T 12897-2006[S].Beijing:Standards Press of China)