Monika Gähler

German Aerospace Center (DLR) | DLR · Department: Civil Crisis Information and Geo-Risks

In the early morning hours on Tuesday, February 6, 2023, the southern part of Türkiye was struck by two large and several smaller earthquakes, causing destruction and casualties over a remarkably large area. In such cases, quick response and well-informed coordination is a key factor to successful first aid responses since damage and the number of...

Many countries, especially in the global south still lack the ability to effectively pursue basic policies, which can lead, in the worst case, to armed conflicts. Access to markets is a key factor for economic growth and an important component in reducing poverty. The SDG 9.1.1 addresses the proportion of the rural population who live within 2km of...

EO based Emergency Mapping have become essential tools to support disaster management and several emergency mapping mechanisms have been established at different (inter)national levels. The lecture shows new possibilities and application examples in the field of earth observation to support disaster management.

Daten der Fernerkundung sind von zunehmender Bedeutung für viele Bereiche der öffentlichen Verwaltung – etwa im Verkehr, im Umweltmonitoring und der Krisenbewältigung. Der rasante Fortschritt der Satellitentechnologie und Analyseverfahren ermöglicht die Nutzung von Fernerkundungsdaten auch in Bereichen, die bisher nicht die Fernerkundung im Blick h...

Große Datenmengen und KI- Anwendungen wie z.B. zur Landbedeckungserfassung erfordern ein ausgefeiltes Datenmanagementsystem. Erste Tests zeigen vielversprechende Ergebnisse, die Klassifikationsschemata für das LBM-DE automatisiert mit KI mit hohen Genauigkeiten aus Fernerkundungsdaten abbilden zu können

Das DLR bietet einen Beitrag zur Sicherheit mit der Entwicklung von Systemen aus allen Bereichen der Fernerkundung. Vom Weltraum, über den Luftraum bis zu terrestrischen und maritimen Systemen. Für noch bessere Lagebilder sollen in Zukunft die Daten der verschiedenen Systeme noch stärker verschnitten werden. Für die Entwicklung, Einbindung und Anwe...

Erdbeobachtungsdaten können einen wichtigen Beitrag zur Lagebeurteilung unzulänglicher Schadensgebiete aus der Luft liefern. Das Zentrum für satellitengestützte Kriseninformation unterstützt durch seine Forschungsergebnisse sowie Produkte Hilfskräfte und Politische Entscheidungsträger. Anwendungsbeispiele werden aufgezeigt sowie neue Forschungserge...

In support of crisis management new technologies are continuously being developed. The remaining challenge for practitioner organizations is not only to identify suitable solutions to close their gaps, but also to test and evaluate its benefit before the disaster strikes. The EU-funded project DRIVER+ (Driving Innovation in Crisis Management for Eu...

In a crisis event, humanitarian aid organisations often do not have the latest spatial information at the required scale, which they would urgently need for many decision-making assessments. In the project "Demand-driven Data Services for Humanitarian Aid" (Data4Human), remote sensing data and other data sources are to be analysed in order to ident...

In recent years, geo- and earth observation technologies have developed into essential tools to support civil protection and disaster management by providing added value to crisis information. Several mechanisms for emergency mapping have been established at different (inter)national levels, at European level the Copernicus Emergency Management Ser...

Over the last years, geospatial and Earth Observation technologies have become essential tools to support the Civil Protection and Disaster Management community by providing value-added crisis information. Several emergency mapping mechanisms have been established at different (inter)national levels. The Center for Satellite Based Crisis Informatio...

Unbemannte Flugsysteme, im Folgenden als Unmanned Aerial Systems (UAS) bezeichnet, etablieren sich durch die Vorteile einer hohen geometrischen Auflösung, schnellen Verfügbarkeit hochaktueller Daten und großen Einsatzflexibilität immer mehr als Aufnahmeinstrumente der Fernerkundung. Insbesondere fur zivile Sicherheitsanwendungen bergen diese Instru...

Unmanned Aerial Systems (UAS) are establishing themselves by the advantages of very high geometrical resolution, fast availability of acquired data and its operational flexibility as recording devices for remote sensing. Besides the aspects mentioned above, the instruments show further potential especially for civil security applications by providi...

Unmanned Aerial Systems (UAS) are establishing themselves by the advantages of very high geometrical resolution, fast availability of acquired data and its operational flexibility as recording devices for remote sensing. Besides the aspects mentioned above, the instruments show further potential especially for civil security applications by providi...

Disasters can cause drastic environmental changes. For managing the disasters and to assess their environmental impacts a large amount of spatial data is required. Earth observation data offer independent coverage of wide areas for a broad spectrum of crisis situations. It provides information over large areas in near-real-time and supplementary at...

Dank moderner Satellitentechnik können Einsatzleitungen und Katastrophenstäbe aktuelle Geoinformationen für ein reales Abbild des Einsatzraumes abrufen. Die Fernerkundung aus dem Weltall eröffnet so auch der Polizei neue Fähigkeiten und kann vorhandene Informationslücken schließen.

In this paper an automatic near-real time oil spill detection approach using single-polarized high resolution X-Band Synthetic Aperture Radar satellite data is presented. Dark formations on the water surface are classified in a completely unsupervised way using an automatic tile-based thresholding procedure. The derived global threshold value is us...

Optical satellites are commonly the main data source used for burnt area mapping in a rush mode, but data availability can be limited by weather conditions or direct fire effects such as smoke plumes or haze. Thus, our study focused on compensating these shortcomings through the complementary use of SAR data. In order to investigate the potential o...

In the FP-7 GMES SAFER project a pre-operational service for emergency response and emergency support products was implemented to reinforce the European capacity to respond to emergency situations. SAFER was not only focusing on “rapid mapping” and validated products during the crisis phase but also on the enrichment of the service with a wider set...

The paper reports on the activity of the Center for Satellite based Crisis Information (ZKI) of the German Aerospace Center (DLR) in the aftermath of the devastating earthquake in Port-au-Prince, Haiti on 12 January 2010. DLR/ZKI closely coordinated with the European Global Monitoring for Environment and Security (GMES) program and the Internationa...

Usually, optical data are used for detecting burned areas in a rush mode, but the analysis of these data is often limited due to persistent cloud cover or haze. This paper focuses on the potential of X-band SAR data for mapping forest fires in the European Mediterranean region. The goal of the study was the development of an object-based, semi-auto...

In a classical approach, optical data are being used for forest fire detection in a rush mode. Difficulties arise due to persistent cloud coverage, haze layers and smoke plumes. In contrast, radar measurements offer high acquisition rates because of their ability to penetrate clouds and their independence of sun illumination. However, a visual inte...

Due to the worldwide increasing occurrence of natural disasters, humanitarian emergency situations and civil endangerment the need grow for timely information on these events. The purpose of the joint project DeSecure is to improve the timely delivery of useful, accurate and efficient information obtained with the help of satellites for German User...

In this paper a general framework for fast and interactive classification of very high resolution satellite imagery for emergency and crisis mapping applications as well as several other applications is proposed. Multiscale image information as well as hierarchical and spatial context information is incorporated into the classification process usin...

In diesem Artikel wird ein Rahmenwerk von Methoden für eine rasche und interaktive Klassifikation hochauflösender optischer Satellitenbilder im Rahmen von Notfall- und Krisenkartierungen sowie einer Vielzahl anderer Anwendungen vorgestellt. Mittels eines hybridenMarkov-Modells, welches ein hierarchisches, gerichtetes und ein ungerichtetes, planares...

In this contribution a framework for classification of high resolution optical satellite images in the context of crisis mapping is proposed and evaluated. Multiscale image information (data model) as well as hierarchical and spatial context information (prior model) is incorporated into the classification process using a hybrid Markov model which...

In the frame of the European Commission FP7 research programme the GMES project SAFER aims at developing the pre-operational version of the GMES Emergency Response Service (GERS). One part of this service is the rapid mapping component called Emergency Mapping. Within rapid mapping, satellite-based information products are generated and provided du...

Ein Ansatzpunkt zur Verbesserung der Krisenlageinformation zielt auf die Verbesserung der Bereitstellung satellitenbasierter Kriseninformation über interaktive Kartenanwendungen ab. Wie aber kann eine verbesserte Bereitstellung von satellitenbasierter Kriseninformation im Zuge einer Notfall- und Krisenkartierung über eine interaktive Kartenanwendun...

Es wurde ein Themenheft der PFG über das Projekt DeSecure erstellt. Das Editoral gibt einen Einblick in die Ziele und Ergebnisse des Projektes DeSecure und einen Überblick über die Weiterentwicklungen bzw. Artikel dieses Heftes

Detailed information regarding the location and extent of areas affected by wild land fires are necessary for assessing impacts on vegetation composition, biodiversity, soil erosion and the hydrological cycle. Remote Sensing is a powerful tool to map burned areas quickly and reasonably, providing spatial information, even in remote regions. This pa...

Weltweit treten verschiedenste Arten von Naturkatastrophen und vom Menschen verursachte Krisen auf. In Krisen liegen die Herausforderungen insbesondere in der schnellen Bereitstellung der relevanten Information und im Zusammenwirken aller Beteiligten. Somit steigt mit der weltweiten Zunahme von Naturkatastrophen, humanitären Notsituationen und zivi...

This article aims to describe the International Charter, the GMES Service Element RISK-EOS and the Center for satellite-based crisis information with respect to the Charter activation for the UK flooding in 2007. Insights will be given to the basic structures and procedures as well as to the results and products provided during this call.

DESECURE ist ein Verbundprojekt mit dem Ziel der Verbesserung der Verfügbarkeit satellitengestützter Kriseninformation in Deutschland und geht einher mit dem Ausbau der GMES Aktivitäten auf europäischer Ebene. Die Verbesserung der Krisenlageinformation erfolgt unter anderem durch eine Stärkung der in Deutschland verfügbaren methodisch-technischen N...

Mit der weltweiten Zunahme von Naturkatastrophen, humanitären Notsituationen und zivilen Gefahrenlagen steigt auch der Bedarf an zeitnaher, präziser und flächendeckender Lageinformation. DeSecure ist ein Verbundprojekt mit dem Ziel der Verbesserung der Verfügbarkeit satellitengestützter Kriseninformation in Deutschland und geht einher mit dem Ausba...

Deutschland hat ein umfassendes und in der Praxis bewährtes Planungssystem einschließlich integrierter Umweltprüfung, das auch für zusätzliche bzw. erweiterte Prüfinstrumente günstige Voraussetzungen bietet. Das Flächenmonitoring in der Regionalplanung, aber auch für die Städte und Gemeinden in der vorbereitenden Bauleitplanung kann mit Hilfe einer...

This contribution concentrates on the determination of thematic uncertainty after the classification process. It is shown that in this context –particularly when evaluating remotely sensed scenes showing high spatial resolution – severe problems arise due to indeterminate boundaries in both reference data and classification results. This effect mai...

This contribution concentrates on the determination of thematic uncertainty after the classification process. It is shown that in this context –particularly when evaluating remotely sensed scenes showing high spatial resolution – severe problems arise due to indeterminate boundaries in both reference data and classification results. This effect mai...

Digitale Fernerkundungsdaten sind für Aufgaben in den Bereichen Umweltplanung und Naturschutz (wie z.B. die Erfassung von Biotoptypen) bislang wenig eingesetzt worden. Als Nachteil galt hierbei bisher vor allem die für diese Planungsebene nicht ausreichende räumliche Auflösung der operationellen Aufnahmesysteme, so dass Einzelobjekte und kleinräumi...

For monitoring environmental changes, new digital remote sensors have become available that allow monitoring and change detection analyses at resolutions and scales that were deemed impossible just a few years ago. The advent of airborne stereo scanners of ultra high spatial resolution offers the possibility of a complete digital remote sensing pro...

The advent of very high-resolution satellite programs and digital airborne cameras with ultra high resolution offers new possibilities for very accurate mapping of the environment. With these sensors of improved spatial resolution, however, the user community faces a new problem in the analysis of this type of image data. Standard classification te...

Zusammenfassung: Im Rahmen mehrerer Biotoptypen-Monitoring-Vorhaben nutzt das For-schungszentrum Geoinformatik und Fernerkundung der Hochschule Vechta Daten des digita-len Stereoscanners HRSC-A bzw. der neueren Kameraversion HRSC-AX. Ziel der Projekte sind die hochgenaue Erfassung und das langfristige Monitoring von Biotoptypen und ihren Veränderun...

The availability of remote sensing data that are needed for global, regional and local environmental monitoring has greatly increased over the recent years. New technologies such as global positioning system (GPS), digital photogrammetry and multi-source satellite remote sensing are creating data at higher spatial, spectral and temporal resolution...

The availability of remote sensing data that are needed for global, regional and local environmental monitoring has greatly increased over the recent years. New technologies such as global positioning system (GPS), digital photogrammetry and multi-source satellite remote sensing are creating data at higher spatial, spectral and temporal resolution...