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Sarah O.

@sortonovi

5.0
1
2.8
2.8
100%

GIS Cartography / Remote Sensing

$30 USD / Hour
・
Flag of
France (3:08 PM)
・
Joined on July 4, 2024
$30 USD / Hour
・
✓ PhD in Geography ✓ Master's Degree in Geoscience and Geomapping ✓ GIS modelling / Remote Sensing / PostgreSQL / PostGIS / Data Management As a freelance GIS Engineer specializing in remote sensing applied to satellite image processing, I am fully experimented in GIS tools (Google Earth Engine, BigQuery, ArcGIS, QGIS, PostGIS, PostgreSQL, Geoserver). As part of my previous missions, I have been responsible for deploying geographic data infrastructures, I have set up and carried out numerous multi-parameter GIS/geospatial analysis and modeling projects, I am accustomed to geographic data processing (GIS/satellite data acquisition, correction, processing, API production, modeling) and I produce rigorous analysis reports to complete my missions. As I graduated a PhD position in geography from the University of Reims in 2021, I'm adaptable, rigorous and organized.
Verifications
On time
100%
On budget
100%
Accept rate
100%
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Portfolio

Portfolio

12150252
Located in Rilly-la-Montagne, France
Modelling and monitoring of a rotational landslide using GIS
Located in Rilly-la-Montagne, France
Modelling and monitoring of a rotational landslide using GIS
12150302
Located in Vandières, Marne, France. The first instabilities appeared at the beginning of the 1990s. Here's a quick look at the type of cards you can get.
Monitoring the evolution of a landslide using GIS
12150186
The aim of this project was to extract slope statistics from a VHR raster (min, average, max, median, var, etc.) and map them on a cadastral scale for the Champagne vineyards (France) located in the Champagne AOC (34 000 hectares = 84,000 acres). The output is a dynamic map showing these values, with the option of adjusting different slope thresholds.
Map of the slopes of AOC Champagne(VHR)
12150306
The PhD work has been sponsoried by the CIVC (Comité Interprofessionnel du Vin de Champagne), now called Comité Champagne. Beginning: 2018 Defense completed on: 2021 University of Reims, GEGENAA Laboratory.
My PhD methodology (Physical Geography)
12150246
Phase 1: GIS monitoring (3-5 cm ortophotography) and photo-interpretation of the ice-covered surfaces of several Alpine glaciers in the Arc valley (Haute-Maurienne, France and Italy). Phase 2: Lidar extraction (VHR) and compilation and analysis of Sentinel-2 and Sentinel-1 data to feed surface behaviour estimation models calibrated with meteorological data.
Monitoring alpine glaciers using GIS data (VHR)
Phase 1: GIS monitoring (3-5 cm ortophotography) and photo-interpretation of the ice-covered surfaces of several Alpine glaciers in the Arc valley (Haute-Maurienne, France and Italy). Phase 2: Lidar extraction (VHR) and compilation and analysis of Sentinel-2 and Sentinel-1 data to feed surface behaviour estimation models calibrated with meteorological data.
Monitoring alpine glaciers using GIS data (VHR)
Phase 1: GIS monitoring (3-5 cm ortophotography) and photo-interpretation of the ice-covered surfaces of several Alpine glaciers in the Arc valley (Haute-Maurienne, France and Italy). Phase 2: Lidar extraction (VHR) and compilation and analysis of Sentinel-2 and Sentinel-1 data to feed surface behaviour estimation models calibrated with meteorological data.
Monitoring alpine glaciers using GIS data (VHR)
12150295
Numerous landslides are affecting vineyard plots in the Champagne region. After taking data on the ground using a drone, the data was processed using Agisoft Metashape pro to create a 3D model of the landslide and to analyse and calculate the areas affected by this phenomenon. Technical analyses are provided to support technical management.
3D modeling & photogrammetry of a landslide
Numerous landslides are affecting vineyard plots in the Champagne region. After taking data on the ground using a drone, the data was processed using Agisoft Metashape pro to create a 3D model of the landslide and to analyse and calculate the areas affected by this phenomenon. Technical analyses are provided to support technical management.
3D modeling & photogrammetry of a landslide
12150252
Located in Rilly-la-Montagne, France
Modelling and monitoring of a rotational landslide using GIS
Located in Rilly-la-Montagne, France
Modelling and monitoring of a rotational landslide using GIS
12150302
Located in Vandières, Marne, France. The first instabilities appeared at the beginning of the 1990s. Here's a quick look at the type of cards you can get.
Monitoring the evolution of a landslide using GIS
12150186
The aim of this project was to extract slope statistics from a VHR raster (min, average, max, median, var, etc.) and map them on a cadastral scale for the Champagne vineyards (France) located in the Champagne AOC (34 000 hectares = 84,000 acres). The output is a dynamic map showing these values, with the option of adjusting different slope thresholds.
Map of the slopes of AOC Champagne(VHR)
12150306
The PhD work has been sponsoried by the CIVC (Comité Interprofessionnel du Vin de Champagne), now called Comité Champagne. Beginning: 2018 Defense completed on: 2021 University of Reims, GEGENAA Laboratory.
My PhD methodology (Physical Geography)
12150246
Phase 1: GIS monitoring (3-5 cm ortophotography) and photo-interpretation of the ice-covered surfaces of several Alpine glaciers in the Arc valley (Haute-Maurienne, France and Italy). Phase 2: Lidar extraction (VHR) and compilation and analysis of Sentinel-2 and Sentinel-1 data to feed surface behaviour estimation models calibrated with meteorological data.
Monitoring alpine glaciers using GIS data (VHR)
Phase 1: GIS monitoring (3-5 cm ortophotography) and photo-interpretation of the ice-covered surfaces of several Alpine glaciers in the Arc valley (Haute-Maurienne, France and Italy). Phase 2: Lidar extraction (VHR) and compilation and analysis of Sentinel-2 and Sentinel-1 data to feed surface behaviour estimation models calibrated with meteorological data.
Monitoring alpine glaciers using GIS data (VHR)
Phase 1: GIS monitoring (3-5 cm ortophotography) and photo-interpretation of the ice-covered surfaces of several Alpine glaciers in the Arc valley (Haute-Maurienne, France and Italy). Phase 2: Lidar extraction (VHR) and compilation and analysis of Sentinel-2 and Sentinel-1 data to feed surface behaviour estimation models calibrated with meteorological data.
Monitoring alpine glaciers using GIS data (VHR)
12150295
Numerous landslides are affecting vineyard plots in the Champagne region. After taking data on the ground using a drone, the data was processed using Agisoft Metashape pro to create a 3D model of the landslide and to analyse and calculate the areas affected by this phenomenon. Technical analyses are provided to support technical management.
3D modeling & photogrammetry of a landslide
Numerous landslides are affecting vineyard plots in the Champagne region. After taking data on the ground using a drone, the data was processed using Agisoft Metashape pro to create a 3D model of the landslide and to analyse and calculate the areas affected by this phenomenon. Technical analyses are provided to support technical management.
3D modeling & photogrammetry of a landslide
Changes saved
5.0 · 1 Review
Reviews
S
Urgent, Historical Silk Road Map Creation • £200 GBP
Sarah completed the project quickly, responding promptly to our requests for corrections or amendments to the map. We had a complex map in that it spanned Eurasia covering historical land and sea routes, and including many nodes or ports, but the map needed to be at the same time simple yet detailed, and able to be rendered in both colour and B&W. All of this was done. It was a pleasure to work with such a competent professional.
Stephen M.
@stephenlm
•
Flag of
Nottingham, United Kingdom
•
6 months ago
Share
Experience
Project Manager
Apr, 2022 - Apr, 2023
•
1 year
CIVC - Comité Champagne
Apr, 2022 - Apr, 2023
•
1 year
I was in charge of the deployment and management of a GIS database (data hub center) in order to centralize GIS/satellite datas in an operational GIS interface that all of the team can use. I was also in charge of the management of satellite datas projects and GIS datamanager (cadastre, land use, vineyards canopy typology, spatial queries, disease and decline of vineyards monitoring),support for geospatial projects, field surveys (leaves, soil). Full-time, Comité Champagne (Épernay, France).
Apr, 2022 - Apr, 2023
•
1 year
PhD in geography
Nov, 2018 - Dec, 2021
•
3 years, 1 month
University of Reims (France)
Nov, 2018 - Dec, 2021
•
3 years, 1 month
I worked on the topic of modeling the risk of landsliding in Champagne (France). I carried out numerous missions involving GIS data acquisition and processing, and satellite image collection and management, with the aim of enriching a model capable of predicting landslides in this region.The title of my subject was to Instability of Champagne vineyard slopes: forcing analysis and hazard modelling
Nov, 2018 - Dec, 2021
•
3 years, 1 month
Research internship
Mar, 2018 - Sep, 2018
•
5 months, 30 days
GEGENAA (France)
Mar, 2018 - Sep, 2018
•
5 months, 30 days
Management of geospatial and digital databases, GIS data processing (lidar, aerial photographs, orthophotographs) and satellite data (Sentinel-1, Sentinel-2, Landsat, ASTER, Pléiades, SPOT), digital mapping, deep learning and extraction of surface features (pixel 50-cm to 10-meters), Python, geostatistics, field measurements (geophysics - electrical resistivities, boreholes, gauging, granulometric analyses, piezometric surveys, drone photogrammetry, dGPS surveys), 3D modeling.
Mar, 2018 - Sep, 2018
•
5 months, 30 days
Education
Université de Reims Champagne-Ardenne
2018 - 2021
•
3 years
PhD
Flag of
France
2018 - 2021
•
3 years
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