Geoscience data

An Interferogram of the devastating earthquake in Indonesia last July 29, 2018 with a magnitude of 6.4. Data were processed using 2 Sentinel 1 data using repeat pass interferometry. One cycle (cold to hot color) means half of the radar wavelength which is approximately 3.5 - 7.5 cm wavelength. The data shows vertical ground displacement with respect to the satellites line of sight (LOS).

Sentinel 1 interferogram of Haiti Magnitude 5.9 earthquake on Oct 7, 2018. Images used were 26 September and 8 October 2018.

USGS Magnitude 2.5+ Earthquakes in the past week in Turkey

On 6 February 2023 at 4:17h, local time in Türkiye (01:17 GMT), an earthquake with a magnitude of 7.8 hit Türkiye and northwestern Syria. It mainly affected the cities of Adana, Adiyaman, Diyarbakir, Gaziantep, Hatay, Kahramanmaras, Kilis, Malatya, Osmaniye, and Sanliurfa in southeastern Türkiye and Aleppo, Hama, Idlib, Lattakie, and Tartous governorates in northwestern Syria. The earthquake’s epicentre was 23km east of the district of Nurdagi, in Türkiye’s Gaziantep city, at a depth of 24.1km. Türkiye is vulnerable to earthquakes because it lies on several fault lines, and the 7.8 quake seems to be the strongest since 1939 On the same day, at 13:45h, local time in Türkiye, another earthquake with a magnitude of 7.6 struck Türkiye. It hit four kilometres southeast of Ekinozu town in Kahraman Maras province, where the 7.8 earthquake hit hours earlier. As at 6 February, there had been at least 78 aftershocks.

**UNOSAT code EQ20230206SYR, GDACS Id: 1357372** This report provides satellite-based comprehensive damage assessment results over Syria following the 06th of February 2023 Marash/Antep earthquakes sequence which struck southern Türkiye and north-western parts of Syria. The mainshock measured a magnitude of 7.8 and occurred at a crucial moment, 4:15 am local time, when most people were at home sleeping. It was a shallow depth earthquake with an epicentre located about 35 km north-west of the Turkish city of Gaziantep. These earthquakes caused more than 46,000 deaths in Türkyie and over 4,500 in northwest Syria. The humanitarian community estimated that 8.8 million people live in the most affected areas in Syria. Overall, 170 sub-districts in 43 districts in 10 of Syria’s governorates have been impacted by the earthquake. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

**UNOSAT code: EQ20231008AFG, GDACS ID: 1394952** On the 7th of October 2023, a 6.3 magnitude earthquake struck the Herat province in the western part of Afghanistan. The epicentre was located 40 km north-west of Herat City and caused damage and destruction that triggered humanitarian needs for the local populations. The situation worsened when a second and a third strong earthquakes struck the region few days later, respectively on the 11th and 15th of October. The local government reported that the number of deaths was above 2000 people. After the earthquake, UNOSAT quickly estimated that more than a million people were living with the intensity zones above V. It was also estimated that between 150,000 and 230,000 buildings were located within the affected zones. The United Nation Office for the Coordination of Humanitarian Affairs (UNOCHA) reported that the worst affected districts correspond to Herat, Injil and Zindajan district with more than 21,500 destroyed homes. Furthermore in the Herat Province more than 230,000 homes have been impacted by the earthquake and 37,139 families have been left without home living in temporary shelter or open spaces (UNOCHA). At least 40 health facilities were affected during the earthquake, hampering the access to healthcare for an estimated of 580,000 people. One month after the earthquake people displaced from their home still suffer as the winter is approaching and temperatures are dropping (UNHCR).

**UNOSAT code EQ20231008AFG, GDACS Id: 1394952** This map illustrates the level of damage induced by the 07 October earthquake (M6.3) in settlements North and North-West Herat as observed from very high-resolution images Pléiades acquired on 09 October 2023. UNOSAT has analysed 4 areas for a total of 750km² and detected 56 affected settlements, amongst which 38 are moderately affected, 3 severely affected and 15 are almost destroyed. The map illustrates also the coseismic surface displacement interferogram related with the 7 October 2023 earthquake as deduced using a pair of SAR images acquired on 07 Oct. 2023 and 25 Sep. 2023. Narrow fringes translate a higher surface displacement. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

**UNOSAT code EQ20221121IDN, GDACS Id: 1347183** Live web map providing geospatial information about damaged caused by the earthquake that stroke Indonesia on 21 November 2022. This web map gives an updated overview over potentially damaged and damaged buildings based on very high-resolution satellite images.

**UNOSAT code EQ20230206SYR, GDACS Id: 1357372** توضح هذه الخريطة المباني التي يحتمل أنها تتضررت من جراء زلزال 06 فبراير 2023 في جنديرس في منطقة عفرين (محافظة حلب)، كما تم اكتشافها من صورة القمر الصناعي عالية الدقة Pleiades التي تم الحصول عليها في 11 فبراير 2023. في مدينة جنديرس، حدد يونوسات 228 مبنى متضررا و318 مبنى يحتمل أن يكون متضررا. هذا تحليل أولي ولم يتم التحقق من صحته بعد على الأرض. يرجى إرسال التعليقات الأرضية إلى مركز الأمم المتحدة للأقمار الصناعية (يونوسات)

**UNOSAT code VO20221206IDN, GDACS Id: 1000057** This map illustrates the potentially affected areas by pyroclastic flow/deposits of the December 2022 Semeru mount eruption in East Java (Indonesia) as inferred from post eruption satellite images VRRS, Worldview-3, Spot 6, and Sentinel-2, images acquired on 8, 9, 11 & 12 Dec. 2022 respectively. Within this area, UNOSAT has identified 208 affected structures and 221 structures are potentially affected. Based on Worldpop population data, WSF urban areas data, about 7ha of urban areas are affected by the pyroclastic flow/deposit and about 8,000 people are potentially directly exposed to pyroclastic flow in this zone. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

**UNOSAT code VO20221206IDN, GDACS Id: 1000057** This map illustrates the potentially affected areas by pyroclastic flow/deposits of the December 2022 Semeru mount eruption in East Java (Indonesia) as detected by satellite images acquired on 4 Dec 2022 10km SE Mount Semeru. Based on analysis of Worldview-3, Spot 6 and Sentinel-2 images acquired on 9, 11 & 12 Dec. 2022 respectively, about 460ha of land appear to be severely affected by the volcanic eruption induced effects in the analyzed area of about 2,000ha. Within this area, UNOSAT has identified 206 affected structures and 10 potentially affected structures. Based on Worldpop population data and affected area by the pyroclastic flow/deposit, about 1,500 people are potentially exposed in this zone. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

**UNOSAT code EQ20230909MAR, GDACS Id: 1390643** Status: Power outage observed. Further action(s): continue monitoring No significant power outage observed in Marrakech (70 km NE mainshock epicentre), Taroudant (150 km SW Marrakech) and Chichaoua (75 km SW Marrakech). By 17 September, power supply in Tameslouht (20 km SW Marrakech) has recovered to the level observed before the earthquake of 08 September 2023. On 14 September, Southeast of Amizmiz likely to have power outage. By 17 September, power supply in Amizmiz (50 km SW Marrakech) was still  in recovery phase but not yet at the before earthquake level. On 14 September, no evidences of power outage is observed in rural areas such as Ait Iaaza (60 km SW mainshock epicentre) and Sidi Zouine (60 km NE mainshock epicentre).

**UNOSAT code EQ20231008AFG, GDACS Id: 1394952** Status: Destroyed structures observed Further action(s): full assessment to be conducted Widespread destroyed structures observed in several villages North and Northwest of Herat in Zindajan & Hinjil Districts, Hirat Province folowing the 15 October 2023 M6.3 earthquake; Temporary shelters observed in the affected villages as of 15 October 2023; Additional damage to structures are observed from an image acquired on15 October 2023; The 15th of October 2023 earthquake has triggered additional damage in areas already damaged by the 9th and 11th October 2023 earthquakes.

**UNOSAT code: VO20210523COD** This map illustrates the lava flow extent and the related geological information north of Goma airport, Nord-Kivu province, D.R. of the Congo as detected by satellite images acquired after the eruption of the Mount Nyiragongo on 22 May 2021. UNITAR-UNOSAT analysis used Sentinel-1 acquired on 25 May 2021, Sentinel-2 & Pleiades images acquired on 1 June 2021, at respectively 16:21 UTC, 08:30 UTC and 11:35 UTC, to extract the lava flow extent. Within this map, three vents have been identified along the hillside south of Nyiragongo caldera. In addition, about 10 km of fissures have been mapped and are mainly in NNE-SSW and NNW-SSE directions. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR-UNOSAT.

**UNOSAT code: VO20211205IDN** This map illustrates the potentially affected areas by Lahar and Pyroclastic density currents (PDCs) including geological information of Mount Semeru, Java province, Indonesia as detected by satellite images acquired after the eruption of the Mount Semeru on 4 Dec 2021. UNITAR-UNOSAT analysis used Pleiades images acquired on 10 & 11 Dec 2021 to estimate the affected area by Lahar and Pyroclastic density currents. Within the analyzed area, about 3,220 ha appear to be affected. Based on Worldpop population data and affected area by Lahar and pyroclastic density currents, about 8,400 people are potentially exposed or living close to pyroclastic density area. In addition, base on Esri 2020 Land Cover, potentially affected in tree area ~2,100ha, scrub/shrub area ~ 400 ha, cropland ~ 165 ha, built area ~ 140 ha. Important note: Pyroclastic density currents (PDCs) are perhaps the most hazardous events to local areas during explosive volcanic eruptions. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

**UNOSAT code: VO20210523COD** This map illustrates potentially affected structures and buildings in Nyiragongo district, Nord-Kivu province, DR Congo as detected by satellite image acquired after the 22 May 2021 Nyiragongo volcanic eruption. UNITAR-UNOSAT analysis used a Sentinel-1 image acquired on 25 May 2021, at 16:21 UTC, to extract the lava flow extent. Within the map extent, about 1,722 structures and the road about 18 km are potentially affected by the lava flow. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR-UNOSAT.

**UNOSAT code: VO20211025VUT** This map illustrates the volcanic ashfall dispersion as observed using Sentinel-2 imagery acquired on 23 October 2021, 10:00 hrs. local time over Yasur volcano on Tanna Island, Vanuatu. At the time of the acquisition, the ashfall covered about 20 km2 at the Southwestern direction of the volcanic crater. Using the building footprints of Humanitarian Open Street Map as a baseline, around 440 buildings in the cloud free zone are located within areas covered by ash and smoke, representing 3% of the total number of buildings in Tanna island. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

Este mapa ilustra las estructuras potencialmente dañadas por el sismo del 19 de septiembre de 2017 con intensidad de 7.1 grados en la escala de Richter, que fueron detectadas a través de imágenes de satélite para la colonia Capultitlan en la Ciudad de México. Se identificaron 17 estructuras potencialmente dañadas dentro de la imagen de satélite base, de las cuales 12 se encuentran dentro del límite administrativo de la colonia. En análisis se realizó con una imagen WorldView-2, adquirida el 26 de septiembre de 2017, caracterizándose como un análisis preliminar que aún no es validado en campo.

Este mapa ilustra las estructuras potencialmente dañadas por el sismo del 19 de septiembre de 2017 con intensidad de 7.1 grados en la escala de Richter, que fueron detectadas a través de imágenes de satélite para la colonia Cuautepec Madero en la Ciudad de México. Se identificaron 29 estructuras potencialmente dañadas dentro de la imagen de satélite base, de las cuales 16 se encuentran dentro del límite administrativo de la colonia. En análisis se realizó con una imagen WorldView-2, adquirida el 26 de septiembre de 2017, caracterizándose como un análisis preliminar que aún no es validado en campo.

This map illustrates damaged structures detected with different media support (newspapers, government reports, web news) and Digital Globe images captured on September 20 (from the web site https://www.digitalglobe.com/opendata/mexico-city-earthquake/post-event) in San Andrés Cholula and San Pedro Cholula located in Puebla State, Mexico. The analyzed area is located at 60 km of the epicentral zone of the 19 September 2017 M7.1 earthquake. IGG-UNAM identified 39 damaged structures. Please send ground feedback to UNITAR-UNOSAT.

**UNOSAT code: EQ20240326IDN, GDACS ID: 1420595** This map illustrates satellite-detected landslides in Cipongkor Sub-District, Bandung Barat District, Jawa Barat Province, Indonesia as observed from a Fucheng-1 image acquired on 30 March 2024 at 22:34 local time (15:34) and a WorldView-3 image acquired on 29 March 2024 at 10:12 local time (03:12 UTC). Within the analyzed area of 740 hectares, about 50 hectares of landslide scars were observed. UTAR-UNOSAT identified 35 damaged structures, 38 potentially damaged structures and 1 affected road. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

**UNOSAT code: EQ20240326IDN, GDACS ID: 1420595** This map illustrates satellite-detected landslides in in Makale Selatan Sub-District, Tana Toraja District, Sulawesi Selatan Province, Indonesia as observed from a Jilin-1 image acquired on 19 April 2024. Within the analyzed area of 90 hectares, about 6 hectares of landslide scars were observed. UNITAR-UNOSAT identified 5 damaged structures, 10 potentially damaged structures. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

**UNOSAT code: FL20240426KEN, GDACS ID: 1102561** This map illustrates satellite-detected landslides in Mai Mahiu and Kijabe Towns, Kenya, as observed from a Pléiades image acquired on 1 May 2024 at 11:06 local time (08:06 UTC). Within the analyzed area, about 2 km² of landslide scars with a total length of 10 km were observed. UNITAR-UNOSAT identified 1,338 affected structures, about 10 km of affected roads, 2 damaged bridges, and 1 damaged railway. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

**UNOSAT code: LS20240512IDN, GDACS ID: 1102617** This map illustrates satellite-detected mudslide / lahar in Lima Kaum, Rambatanm and Pariangan Districts, Tanah Datar Metropolitan, Sumatera Barat Province, Indonesia, as observed from a Pléiades image acquired on 17 May 2024. Within the analyzed area of about 50 km², about 1.3 km² mudslide / lahar extent was observed. Based on Worldpop population data and the maximal mudslide / lahar extent ~1,200 people are potentially exposed or living close to the affected areas. Furthermore, within the analyzed area, 240 buildings are identified as affected by the floods (1% from the total structures in the analysed area), along with about 2 km of roads, as of 17 May 2024 This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

**UNOSAT code: LS20240512IDN, GDACS ID: 1102617** This application provides geospatial information on the ongoing landslide in Indonesia Important note: The boundaries and names shown, and the designations used on this map do not imply official endorsement or acceptance by the United Nations. The United Nations Satellite Centre. UNOSAT is not responsible for the misuse or misrepresentation of the map.

**UNOSAT code: LS20240512IDN, GDACS ID: 1102617** This map illustrates satellite-detected mudslide / lahar in Sungai Pua and Banuhampu, Agam Metropolitan, Sumatera Barat Province, Indonesia, as observed from a Pléiades image acquired on 20 May 2024. Within the analyzed area of about 1,000 ha about 200 ha mudslide / lahar extent was observed. Based on Worldpop population data ~ 5,000 people within the analysed areas. Furthermore, within the analyzed area, 85 buildings are identified as affected by the floods (1% of the total structures in the analysed area), along with about 400 m of roads, as of 20 May 2024 This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

**UNOSAT code: LS20240525PNG, GDACS ID: 1102646** This application provides geospatial information on the ongoing landslide in Papua New Guinea Important note: The boundaries and names shown, and the designations used on this map do not imply official endorsement or acceptance by the United Nations. The United Nations Satellite Centre. UNOSAT is not responsible for the misuse or misrepresentation of the map.

**UNOSAT code: LS20240512IDN, GDACS ID: 1102617** This map illustrates satellite-detected mudslide / lahar in Canduang, Agam Metropolitan, Sumatera Barat Province, Indonesia, as observed from a Pléiades image acquired on 23 May 2024 and VRSS-2 acquired on 17 May 2024. Within the analyzed area of about 2 km², about 0.3 km² mudslide / lahar extent was observed. Based on Worldpop population data and the maximal mudslide / lahar extent 1,880 people are potentially exposed or living close to the affected areas. Furthermore, within the analyzed area, 170 structures are identified as affected by the floods (10% from the total structures in the analysed area), along with about 680 m of roads, as of 23 May 2024 This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

**UNOSAT code: LS20240525PNG, GDACS ID: 1102646** This map illustrates the extent of satellite-detected landslide scars and related damage in the Lagaip/Pogera District of Enga Province in Papua New Guinea, using GeoEye-1 satellite imagery acquired on May 27, 2024, at 10:42 LT, 2 km west of Mulitaka. A massive landslide and rockfalls have affected the area. Within a 2 km radius, 634 pre-event structures have been identified (OpenStreetMap), of which at least 18 structures have been identified as damaged and/or destroyed. Using WorldPop spatial demographic datasets, it is estimated that at least 2,000 people live within a 2 km radius of the main damaged road. The main landslide scar covers approximately 9 hectares and has also blocked the Laiagam-Porgera road. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

**UNOSAT code: LS20240525PNG, GDACS ID: 1102646** Status: Damaged structures observed Further action(s): Continue monitoring Damaged structures, roads and landslide area observed in Lagaip/Pogera District, Enga Province, Papua New Guinea as of 24 May 2024.

**UNOSAT code: LS20240818NPL** This map illustrates satellite-detected landslides in Thame Village, Solukhumbu District, Koshi Province, Nepal, as observed from a PlanetScope image acquired on 17 August 2024 at 09:58 local time (04:13 UTC). Within the analysed area, about 140 hectares of landslide scars are observed. UNITAR-UNOSAT identified 43 Potentially damaged structures (20 % from the total buildings in the analysed area) and about 2 km of affected roads and paths. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

**UNOSAT code: FL20210630NPL** This map illustrates satellite-detected flash floods and landslides in Melamchi village, Melamchi Municipality, Bagmati province, Nepal as observed using Sentinel-2 satellite imagery acquired on 24 June 2021. Within the analyzed area, approximately 150 structures appear to be potentially affected by the landslides. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to United Nations Satellite Centre (UNOSAT).

**UNOSAT code: FL20220418ZAF** This map illustrates satellite-detected landslides/mudflow-related impact in eThekwini, Metropolitan Municipality, eThekwini District, KwaZulu-Natal Province, South Africa as observed from a Kompsat-3 image acquired on 21 April 2022. Within the analyzed area, 21 ha of landslide scars were observed. Based on Worldpop population data, about 55,000 people live inside the analyzed area. Within the analysis extent, UNITAR-UNOSAT identified 121 damaged structures and 247 potentially damaged structures. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

**UNOSAT code: TC20241028PHL, GDACS ID: 1001115** This map illustrates satellite-detected landslides in Laurel Town, Batangas Province, Region IV-A (Calabarzon), Philippines, as observed from a Sentinel-2 image acquired on 28 October 2024 at 10:17 local time (02:17 UTC). Within the analysed area, about 2 km² of landslide scars /mud flow areas are observed. UNITAR-UNOSAT identified about 450 Potentially damaged structures (6 % from the total buildings in the analysed area) and about 5 km of affected roads. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).

**UNOSAT code: EQ20250328MMR, GDACS ID: 1474477** This application provides geospatial information on ongoing satellite based-assessment related with the 7.7M magnitude Saigaing earthquake in Myanmar & Thailand on the 28 March 2025. Important note: The boundaries and names shown, and the designations used on this map do not imply official endorsement or acceptance by the United Nations. The United Nations Satellite Centre -UNOSAT is not responsible for the misuse or misrepresentation of the map.

**UNOSAT code: EQ20250328MMR, GDACS ID: 1474477** This report provides a comprehensive damage assessment based on satellite analysis and mapping efforts carried out by UNOSAT and other agencies such as Copernicus-EMS and SERTIT to support emergency operations following the M7.7 Sagaing earthquake of 28 March 2025.