9 July 2021
PRELIMINARY SATELLITE-DERIVED DAMAGE ASSESSMENT Bang Phli District, Samut Prakan Province, Thailand
การประเมินความเสียหายเบ้ ืองตน้ ดว้ ยขอ้ มูลจากดาวเทียมจากเหตรุ ะเบิดและไฟไหมโ้ รงงาน ตาบลราชาเทวะ อาเภอบางพลี จังหวัดสมุทรปราการ ประเทศไทย
Status: Damaged structures observed Action: Full assessment to be performed Analysis: United Nations Satellite Center (UNOSAT) THAILAND
BANGKOK
Blast epicenter
SAMUT PRAKAN
BLAST EPICENTER
CAPITAL
PROVINCE BOUNDARY SAMUT PRAKAN AND BANGKOK PROVINCES
3 km radius zone
2 km radius zone
1 km radius zone
1 km
2 km
3 km N 1 km AOI 1 : 1 km radius zone AOI 2 : 2 km radius zone AOI 3 : 3 km radius zone
3 Image center: AOI1 BANG PHLI YAI SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°42'45.512"E BLAST EPICENTER 13°40'25.662"N
STRUCTURES DEBRIS OBSERVED
Village
Village
Debris of structures
Blast epicenter
Factory Building Factory Building
Factory Building
Factory Building
HISEA-1 SAR Satellite / 8 Jul 2021 4 Image center: AOI1 BANG PHLI YAI SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°42'45.512"E BLAST EPICENTER 13°40'25.662"N
HEAVILY DAMAGED STRUCTURES AND DAMAGED ROOF OBSERVED
BEFORE AFTER
Damaged roof Blast epicenter
Destroyed structures
Damaged roof
Damaged roof Damaged roof
N 40 m
WorldView-3 / 29 Jan 2021 Pleiades / 7 Jul 2021
5 Image center: AOI1 BANG PHLI YAI SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°42'40.86"E 300 m from the blast epicenter 13°40'33.293"N
DAMAGED STRUCTURES OBSERVED
BEFORE AFTER
Damaged structures
Blast epicenter
N 30 m
WorldView-3 / 29 Jan 2021 Pleiades / 9 Jul 2021
6 Image center: AOI1 BANG PHLI YAI SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°42'56.47"E 350 m from the blast epicenter 13°40'22.202"N
DAMAGED STRUCTURES AND DAMAGED ROOF OBSERVED
BEFORE AFTER
Damaged roof
Damaged roofs
N 30 m
WorldView-3 / 29 Jan 2021 Pleiades / 9 Jul 2021
7 Image center: AOI1 RACHA THEWA SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°42'58.877"E 500 m from the blast epicenter 13°40'10.665"N
DAMAGED STRUCTURES AND DAMAGED ROOF OBSERVED
BEFORE AFTER
Damaged roof
Damaged roofs
Damaged roofs
N 30 m
WorldView-3 / 29 Jan 2021 Pleiades / 9 Jul 2021
8 Image center: AOI1 RACHA THEWA SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°42'35.331"E 800 m from the blast epicenter 13°40'47.869"N
NO DAMAGED STRUCTURE OBSERVED
BEFORE AFTER
N 40 m
WorldView-3 / 29 Jan 2021 Pleiades / 7 Jul 2021
9 Image center: AOI2 BANG PHLI YAI SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°42'14.14"E 1.2 km from the blast epicenter 13°40'1.477"N
NO DAMAGED STRUCTURE OBSERVED
BEFORE AFTER
N 40 m
WorldView-3 / 29 Jan 2021 Pleiades / 7 Jul 2021
10 Image center: AOI2 BANG PHLI YAI SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°42'39.077"E 1.5 km from the blast epicenter 13°41'11.376"N
NO DAMAGED STRUCTURE OBSERVED
BEFORE AFTER
N 40 m
WorldView-3 / 29 Jan 2021 Pleiades / 9 Jul 2021
11 Image center: AOI2 RACHA THEWA SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°43'30.903"E 1.5 km from the blast epicenter 13°40'41.291"N
NO DAMAGED STRUCTURE OBSERVED
BEFORE AFTER
N 40 m
WorldView-3 / 29 Jan 2021 Pleiades / 9 Jul 2021
12 Image center: AOI2 RACHA THEWA SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°43'12.246"E 1.8 km from the blast epicenter 13°39'29.234"N
NO DAMAGED STRUCTURE OBSERVED
BEFORE AFTER
N 40 m
WorldView-3 / 29 Jan 2021 Pleiades / 7 Jul 2021
13 Image center: AOI3 DOKMAI SUB DISTRICT, PRAWET DISTRICT, BANGKOK 100°41'36.282"E 2.1 km from the blast epicenter 13°40'14.445"N
NO DAMAGED STRUCTURE OBSERVED
BEFORE AFTER
N 40 m
WorldView-3 / 29 Jan 2021 Pleiades / 7 Jul 2021
14 Image center: AOI3 RACHA THEWA SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°42'48.356"E 2.3 km from the blast epicenter 13°39'11.187"N
NO DAMAGED STRUCTURE OBSERVED
BEFORE AFTER
N 40 m
WorldView-3 / 29 Jan 2021 Pleiades / 7 Jul 2021
15 Image center: AOI3 DOKMAI SUB DISTRICT, PRAWET DISTRICT, BANGKOK 100°41'23.275"E 2.5 km from the blast epicenter 13°40'41.78"N
NO DAMAGED STRUCTURE OBSERVED
BEFORE AFTER
N 40 m
WorldView-3 / 29 Jan 2021 Pleiades / 9 Jul 2021
16 Image center: AOI3 RACHA THEWA SUB DISTRICT, BANG PHLI DISTRICT, SAMUT PRAKAN 100°42'52.594"E 2.8 km from the blast epicenter 13°41'58.329"N
NO DAMAGED STRUCTURE OBSERVED
BEFORE AFTER
N 40 m
WorldView-3 / 29 Jan 2021 Pleiades / 7 Jul 2021
17 Image center: AOI3 DOKMAI SUB DISTRICT, PRAWET DISTRICT, BANGKOK 100°41'45.301"E 2.9 km from the blast epicenter 13°41'42.067"N
NO DAMAGED STRUCTURE OBSERVED
BEFORE AFTER
N 40 m
WorldView-3 / 29 Jan 2021 Pleiades / 7 Jul 2021
18 SUMMARY OF FINDINGS
- Destroyed structures observed nearby the blast epicenter as of 7 July 2021;
- Widespread damage and damaged roofs observed within 1 km radius zone from the blast epicenter as of 7 & 9 July 2021;
- No damaged roofs observed beyond 2 km radius from the blast epicenter as of 7 & 9 July 2021.
19 COPYRITHS AND SOURCES
Data sources : Analysis and Product :
(1) Satellite Imagery (post-event) United Nations Satellite Centre (UNOSAT) •
Satellite : Pleiades Acquisition Date : 7 and 9 July 2021 Copyright : CNES (2021), distribution Airbus D&S Source : : Airbus DS
Satellite : HISEA-1 SAR Satellite Acquisition Date : 8 July 2021 Source : : ChinaGEO / NODA / SPACETY & CETC38 & XMU
(2) Satellite Imagery (pre-event)
Satellite : WorldView-3 Acquisition Date : 29 January 2021 Copyright : 2021 Digital Globe Source : USGS-HDDS
(3) Ancillary data
Administrative boundaries : Open Street Map
•
20 @UNOSAT
@UNITAR.unosat
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