Spark generation around forwarders Quantifying spark spread from bogie tracks striking stones
type: Dataset
description: This dataset contains recordings of spark generation events produced when a forwarder equipped with bogie tracks strikes stones under semi-controlled field conditions. The data were collected to quantify spark occurrence and spatial spread, supporting research on wildfire ignition mechanisms and fire risk mitigation in forestry operations. The dataset includes thermal imaging, RGB video, LiDAR data, and aggregated measurements derived from controlled field experiments conducted in south-central Sweden. Data collection Field experiments were conducted at two sites (Site A and Site B) in south-central Sweden. A Komatsu 895 forwarder equipped with bogie tracks was driven over boulders at controlled speeds (0.5, 1, and 3 km/h). Each stone was traversed multiple times, resulting in a total of 79 recorded passes. Sensors used: Thermal camera: FLIR A655sc (resolution: 640x480 pixels, frame rate: 25 Hz) (for detecting sparks) RGB camera: ZED 2 (provided to facilitate the interpretation of the LiDAR data and thermal camera images) LiDAR: Velodyne VLP-16 (for determining spark travel distance) Sensors were mounted on a portable platform positioned approximately 7 m behind the stone, aligned with the bogie track–stone contact point. Data processing Spark events were manually identified from thermal recordings using FLIR Research Studio version 2025.01.0. The spark travel distance was determined with the help of the LiDAR data (viewed/analyzed in MATLAB Lidar Viewer 2024b). The aggregated data includes: Number of sparks per pass Spark travel distance (binned: 0–15 cm, 15–30 cm, 30–45 cm, >45 cm) Forwarder speed (0.5, 1, 3 km/h) Site A vs Site B (new vs worn cleats)
contributor: Nyström, Anders
  type: Person
  family name: Nyström
  given name: Anders
creative work status: completed
  type: DefinedTerm
  in defined term set: http://publications.europa.eu/resource/authority/dataset-status
  term code: COMPLETED
creator: Strand, Filip
creator: Hansson, Linnea
creator: Asplund, Fredrik
date modified: 2026-03-23
date published: 2026-03-23
funding: Grant
  funder: Royal Swedish Academy of Agriculture and Forestry
funding: FIRE
  type: Grant
  funder: Swedish Civil Contingencies Agency
keywords: Forest Science
  type: DefinedTerm
  term code: 40104
keywords: Wildfires/prevention & control
keywords: Forestry
keywords: spark ignition
keywords: fire prevention
keywords: forest fires
license: https://creativecommons.org/licenses/by/4.0/
publisher: KTH Royal Institute of Technology
version: 0

PropertyValue
property ID: DOI
value: 10.71775/KTH.XME8H-JC618

PropertyValue
property ID: oai
value: oai:datarepository.kth.se:xme8h-jc618

Strand, Filip
type: Person
affiliation: KTH Royal Institute of Technology
family name: Strand
given name: Filip

KTH Royal Institute of Technology
type: Organization
name: Royal Institute of Technology

Hansson, Linnea
type: Person
affiliation: Forestry Research Institute of Sweden
affiliation: KTH Royal Institute of Technology
family name: Hansson
given name: Linnea

Forestry Research Institute of Sweden
type: Organization

Asplund, Fredrik
type: Person
affiliation: KTH Royal Institute of Technology
family name: Asplund
given name: Fredrik

Royal Swedish Academy of Agriculture and Forestry
type: Organization

Swedish Civil Contingencies Agency
type: Organization