Boundary Re-establishment Deep Seated Movement Boundaries move with the surface Extra angles created in fault-span boundaries Shallow surface Movement
{"Image DocumentName": "Boundary Re-establishment", "Image ImageDescription": "Deep Seated Movement. Boundaries move with the surface. Extra angles created in fault-span boundaries. Shallow surface Movement. Boundaries remain relative pre-EQ positions. Specific non-compliances sanctioned by S.G. Managing the Spatial Cadastre. The Earthquake Rules and the Guideline which was published at the same time were developed in response to the 4 September earthquake. Following the February quake it was anticipated that the Rules would also be suitable for dealing with survey issues resulting from that event although the survey issues resulting from liquefaction movements were more complex than September and may require further dispensations from the Rules in some cases. There is also provision in the Canterbury Earthquake Recovery Act 2011, for the normal survey and title requirements to be overruled in some circumstances although this is yet to happen. When dealing with boundary re-establishment the EQ rules differentiate between movements caused by deep seated movement and Shallow surface movement: CLICK. Deep Seated Movement. Where there has been deep-seated movement due to the earthquake then cadastral boundaries are deemed to have moved with the resulting land movement. We are talking about Block Shifts which affect all marks and boundaries and near fault movements. Re-established boundary points must hold the same relationship to physical evidence, including survey marks and boundary occupation, as they did prior to the earthquake. Where there has been relatively uniform block shift then the relationship between boundaries and survey marks will remain the same as before the earthquake. Where boundaries have been displaced or distorted by the fault rupture new boundary angle points in existing boundaries may need to be created. Shallow Surface Movement. In the case of shallow surface movement due to liquefaction this is similar to land slip in which case legal precedents indicate boundaries will normally be reinstated to their original positions after taking into account any block movement. In a particular case where compliance with the Rules is impractical or unreasonable the Surveyor-General can grant an exemption from the requirements, or specify alternative requirements, as provided for by section 47(5) Cadastral Survey Act Granted dispensations will be considered when the EQ Rules are being reviewed and put out for consultation during The CEQ Rules also provide for some relaxation of the normal requirements for orientation of surveys and adoption of boundaries in certain circumstances. Managing the spatial cadastre must go hand in hand with the acceptance of post earthquake boundary re-establishment surveys. For more information on this, please refer to our full conference paper and to Matt Amos\u2019s Paper yesterday afternoon.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}