DB/T 79-2018 in English

VALID

Earthquake disaster assessment based on remote sensing- Earthquake-caused direct economic loss

Issued on:2018-12-26
Implemented on:2019-03-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $270.00
$262.00

Standard No:	DB/T 79-2018
Document status:	VALID
Title in English:	Earthquake disaster assessment based on remote sensing- Earthquake-caused direct economic loss
Title in Chinese:	地震灾害遥感评估地震直接经济损失
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2018-12-26
Implemented on:	2019-03-01
Professional Classification:	DB-Provincial Standard
Related Keywords:	imagery loss calculation loss ratio method remote sensing- earthquake-caused direct economic loss introduction analysis earthquake disaster assessment assessment unit statistical data/emergency database + remote assessment unit
Related Topics:	loss earthquake remote sensing disaster iec on earthquakes iec earthquake remote sensing standards remote sensing standards iec earthquake cy/t 79 Internet underground economy Evaluation Standard Loss iec+ earthquake Economic losses Earthquake Phase II vibration line vibration line shock device disappear in place remote Geography and Remote Sensing remote sensing assessment earthquake area earthquake area recent earthquake shock Is there an earthquake? economy Earthquake August 13 Linear vibrating plate Liujing Earthquake Bureau seismic products Earthquake Disaster Risk Assessment Technology Flood and Drought Disaster Remote Sensing Monitoring and Assessment Technology seismic mercury

Introduction

Analysis of the core content of the standard

Technical aspects	Key points of the method	Data requirements
Demarcation of the assessment area	Must include intensity zones of 8 degrees and above, and extend to 7 degrees under high-resolution imagery	Remote sensing imagery + administrative boundary vector data
Building statistics	Combination of remote sensing interpretation and sampling, with a sampling area ≥10% of the assessment unit	Statistical data/emergency database + remote sensing imagery
Loss calculation	Loss Ratio Method (80% Collapse, 95% Partial Collapse, 45% Significant Damage)	Reset Unit Price + Damage Level Data

Key Technical Indicators

Loss Conversion Factor: Based on statistics from 16 historical earthquakes, the ratio of building losses to total economic losses is ρ_EB = 1.58±0.66, and the proportion of losses in the Intensity VIII zone is ρ_B = 2.68±0.86.

Remote sensing interpretation requires a clear distinction between five types of building damage levels, with collapsed buildings confirmed through texture feature analysis.

Implementation Suggestions

Prioritize the acquisition of aerial images with a resolution of 0.5m or higher
Establish a regionally differentiated reset unit price database (e.g., rural/urban differences)
Use GIS spatial overlay analysis to address the issue of assessment unit cutting

Standard Evolution Analysis

Compared to GB/T18208.4-2011, this standard innovatively introduces the remote sensing sampling statistics method to address the problem of missing data in earthquake zones, and establishes a historical earthquake parameter database in Appendix C to improve assessment reliability.

More samples: GB 50021-2001(2009) YD/T 3934-2021 JC/T 2453-2018

Sample only — not a preview of DB/T 79-2018