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DZ/T 0142-2010 English PDF

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DZ/T 0142-2010: Criterion of aeromagnetic survey
Status: Valid

DZ/T 0142: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
DZ/T 0142-2010English1549 Add to Cart 10 days [Need to translate] Criterion of aeromagnetic survey Valid DZ/T 0142-2010
DZ/T 0142-1994EnglishRFQ ASK 9 days [Need to translate] Criterion of aeromagnetic survey Obsolete DZ/T 0142-1994

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Basic data

Standard ID DZ/T 0142-2010 (DZ/T0142-2010)
Description (Translated English) Criterion of aeromagnetic survey
Sector / Industry Geological Industry Standard (Recommended)
Classification of Chinese Standard D10
Classification of International Standard 07.060
Word Count Estimation 63,649
Date of Issue 2010-08-05
Date of Implementation 2010-08-31
Older Standard (superseded by this standard) DZ/T 0142-1994
Quoted Standard GB/T 14499; DZ/T 0069
Regulation (derived from) ?Ministry of Land and Resources Announcement No.17
Issuing agency(ies) Ministry of Land and Resources
Summary This standard specifies the technical design aeromagnetic total field measurements, instruments and testing, measurement flight and field work, data processing and preparation of maps, anomaly inspection, inference and interpretation and results report writing and other technical requirements. This standard applies to basic geological surveys, energy, metals, non-metallic mineral exploration geology and hydrology, engineering, environmental geological exploration work in the aeromagnetic survey, aeromagnetic job reference can be used for other purposes.

DZ/T 0142-2010: Criterion of aeromagnetic survey

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Criterion of aeromagnetic survey People's Republic of China geological mineral industry standard DZ/T 0142-2010 Replacing DZ/T 0142-1994 Aviation magnetic test specification Released on.2010-08-05 2010-08-31 implementation Ministry of Land and Resources of the People's Republic of China

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General 3 5 Technical Design 4 5.1 Technical Design Book Preparation 4 5.2 Measurement parameter selection 4 5.3 Scope determination 4 5.4 Measuring network density and measuring scale determination 4 5.5 Data collection and flight operations conditions 5 5.6 Main line direction determination 5 5.7 Flight altitude determination 5 5.8 Flight speed and sampling rate determination 6 5.9 Navigation Positioning and Accuracy 6 5.10 Data Collection Content 7 5.11 Measurement and error distribution of total accuracy of aeromagnetic measurements 7 5.12 Magnetic Daily Change Observation 7 5.13 Aircraft Magnetic Field Compensation 8 5.14 Rock (mine) stone magnetic parameter survey 8 6 Instrumentation and inspection 8 6.1 Aeromagnetic instruments and equipment 8 6.2 Airborne aeromagnetic measurement system 9 6.3 Ground station equipment 10 6.4 Field Base Data Preprocessing System 10 6.5 Airborne and ground magnetic survey system integration test 10 6.6 Equipment maintenance during the flight stop 10 7 Measuring flight and field work 10 7.1 Instrument preparation before starting work 10 7.2 Survey area flight 11 7.3 Aerial magnetic survey system air operations and records 11 7.4 Navigation and positioning 11 7.5 Aircraft Magnetic Compensation Flight 12 7.6 Line Survey Flight 12 7.7 Baseline Measurement Flight 12 7.8 Control line measurement flight 13 7.9 Repeat line measurement flight 13 7.10 Magnetic Daily Change Observation 13 DZ/T 0142-2010 7.11 Aeromagnetic Measurement Original Data Catalog 13 7.12 Original data on-site inspection 14 7.13 Track recovery and inspection 14 7.14 Determination and disposal of waste data 14 7.15 Determination of magnetic parameters and specimen collection of rock (mine) stone 14 7.16 Aeromagnetic local anomaly verification 15 8 Data Processing and Drawing Compilation 15 8.1 Aeromagnetic measurement data processing 15 8.2 Aeromagnetic base map compilation 18 8.3 Quality Evaluation 19 8.4 Data Processing Report Writing 22

9 Inferred interpretation of aeromagnetic data

9.1 Interpretation Category 22 9.2 Inferential Interpretation Basic Requirements 22 9.3 Interpretation of regional magnetic fields 23 9.4 Local magnetic field interpretation 23 9.5 Aeromagnetic Inference Interpretation Diagram 24 10 Results report preparation 24 11 Results Report Review and Acceptance 26 Appendix A (informative) Hard compensation method for aircraft magnetic field 27 Appendix B (informative appendix) Aeromagnetic survey design drafting outline 30 Appendix C (Normative Appendix) Relevant provisions for GPS/DGPS navigation and positioning 32 Appendix D (informative) Aviation magnetic survey record form 34 Appendix E (Normative Appendix) International Geomagnetic Reference Field (IGRF) and Geomagnetic Normal Field Correction 39 Appendix F (informative) Aeromagnetic magnetic field conversion data processing and forward and inversion calculations 46 Appendix G (informative appendix) Aeromagnetic survey results report preparation outline 48 Appendix H (informative) Aeromagnetic survey results report format 52 Reference 58 DZ/T 0142-2010

Foreword

This standard replaces DZ/T 0142-1994 "Aviation Magnetic Testing Technical Specifications". The main changes in this standard compared with DZ/T 0142-1994 are as follows. --- Increased aeromagnetic gradient measurement, high-resolution aeromagnetic measurement, high-precision aeromagnetic measurement, differential global positioning system, production measurement, geomagnetism Terms and definitions of normal and geomagnetic anomalies, local anomalies and background fields, ΔT magnetic anomalies; ---Adding magnetic magnetic compensation, differential GPS navigation and positioning, and terrain and inversion fitting calculation methods, etc. The satellite satellite navigation and positioning technology, data collection system and other content have been supplemented; --- Appropriate adjustment of the chapter structure of the original standard, the test content and requirements of the measuring instrument are relatively concentrated, basically in accordance with the actual work Process the various chapters; --- Increased data processing, rock (mineral) stone magnetic parameter measurement, aeromagnetic local anomaly classification, aeromagnetic local anomaly forward and inversion calculation, different Provisions for frequent verification, inferred interpretation and preparation of results reports; --- Removed visual navigation and positioning technology, aeromagnetic absolute measurement and other content; --- Added Appendix F (Aeromagnetic Magnetic Field Conversion Data Processing and Forward and Inverse Calculation) and Appendix H (Aviation Magnetic Measurement Results Report formula). Re-edited Appendix B (Aerospace Magnetic Measurement Work Design Compilation Outline) and Appendix G (Aviation Magnetic Measurement Results Report Preparation Other) The other appendices have been revised and supplemented. Appendix C and Appendix E of this standard are normative appendices, Appendix A, Appendix B, Appendix D, Appendix F, Appendix G and Appendix H are data. Sex appendix. This standard was proposed by the China Geological Survey of the Ministry of Land and Resources. This standard is under the jurisdiction of the Ministry of Land and Resources. This standard was drafted. China Land Resources Aviation Geophysical and Remote Sensing Center. The main drafters of this standard. Xiong Shengqing, Chen Bin, Zhao Baimin, Xue Dianjun, Fan Zhengguo, Guo Zhihong, Liu Yinghui, Guo Yufeng, Han Changqing and so on. DZ/T 0142-2010 Aviation magnetic test specification

1 Scope

This standard specifies the technical design, instrumentation and inspection, measurement flight and field work of aeromagnetic field measurement (referred to as aeromagnetic measurement). Technical requirements for data processing and diagram compilation, anomaly verification, inferred interpretation and report preparation. This standard applies to basic geological surveys, energy, metal, non-metallic mineral geological exploration and navigation in hydrology, engineering, environmental geological exploration Air magnetic measurement work, other purposes of aeromagnetic magnetic test work can be used.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this file. For undated references, the latest edition (including all amendments) applies to this document. GB/T 14499 Geophysical Exploration Technology Symbol DZ/T 0069 Geophysical survey map legend and color standard

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 Aeromagnetic measurement of geomagnetic strength modulus values. 3.2 Aeromagnetic survey measuring the spatial rate of change of the earth's magnetic field (in nT/m or nT/km). Vertical gradient measurement in production applications Three types of measurement, horizontal gradient measurement and full-axis gradient measurement. 3.3 Measuring scale is greater than 1.25000, positioning accuracy is better than ±5m, aviation magnetometer sensitivity is better than ±0.01nT, magnetic compensation standard The difference is better than ±0.08nT, the data measurement point interval is not more than 10m, the data acquisition delay time is less than 0.5s, and the flying height is 150m. The aeromagnetic measurement with a total accuracy better than ±1nT is measured. 3.4 The sensitivity of the aviation magnetometer is better than ±0.01nT, the magnetic compensation result is better than ±1.0nT, the positioning accuracy is better than ±50m, and the digital acceptance is adopted. Recorded, aeromagnetic measurements with a total accuracy better than ±3nT. 3.5 Under laboratory conditions, the aerodynamic magnetometer is able to observe the minimum amount of change in the value of the external magnetic field. 3.6 The amount of noise of an air magnetometer (or system) under operating conditions. Expressed by the fourth-order differential rms value of the recorded data. 3.7 In order to determine the working accuracy of the navigation and positioning system, select the point of known coordinates on the ground (usually select the aircraft parking point) for static weight DZ/T 0142-2010

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