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Explorative Data Analysis Methods: Application to Laser-Induced Breakdown Spectroscopy Field Data Measured on the Island of Vulcano, Italy

Rammelkamp, Kristin and Schröder, Susanne and Pisello, Alessandro and Ortenzi, Gianluigi and Sohl, Frank and Unnithan, Vikram (2023) Explorative Data Analysis Methods: Application to Laser-Induced Breakdown Spectroscopy Field Data Measured on the Island of Vulcano, Italy. Sensors, 23 (13), p. 6208. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/s23136208. ISSN 1424-8220.

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Official URL: https://dx.doi.org/10.3390/s23136208

Abstract

One of the strengths of laser-induced breakdown spectroscopy (LIBS) is that a large amount of data can be measured relatively easily in a short time, which makes LIBS interesting in many areas, from geomaterial analysis with portable handheld instruments to applications for the exploration of planetary surfaces. Statistical methods, therefore, play an important role in analyzing the data to detect not only individual compositions but also trends and correlations. In this study, we apply two approaches to explore the LIBS data of geomaterials measured with a handheld device at different locations on the Aeolian island of Vulcano, Italy. First, we use the established method, principal component analysis (PCA), and second we adopt the principle of the interesting features finder (IFF), which was recently proposed for the analysis of LIBS imaging data. With this method it is possible to identify spectra that contain emission lines of minor and trace elements that often remain undetected with variance based methods, such as PCA. We could not detect any spectra with IFF that were not detected with PCA when applying both methods to our LIBS field data. The reason for this may be the nature of our field data, which are subject to more experimental changes than data measured in laboratory settings, such as LIBS imaging data, for which the IFF was introduced first. In conclusion, however, we found that the two approaches complement each other well, making the exploration of the data more intuitive, straightforward, and efficient.

Item URL in elib:https://elib.dlr.de/196483/
Document Type:Article
Title:Explorative Data Analysis Methods: Application to Laser-Induced Breakdown Spectroscopy Field Data Measured on the Island of Vulcano, Italy
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Rammelkamp, KristinUNSPECIFIEDhttps://orcid.org/0000-0003-4808-0823140084250
Schröder, SusanneUNSPECIFIEDhttps://orcid.org/0000-0003-1870-3663UNSPECIFIED
Pisello, AlessandroUNSPECIFIEDhttps://orcid.org/0000-0002-7772-4678UNSPECIFIED
Ortenzi, GianluigiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sohl, FrankUNSPECIFIEDhttps://orcid.org/0000-0003-0355-1556UNSPECIFIED
Unnithan, VikramUNSPECIFIEDhttps://orcid.org/0000-0002-4656-3824UNSPECIFIED
Date:July 2023
Journal or Publication Title:Sensors
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:23
DOI:10.3390/s23136208
Page Range:p. 6208
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:1424-8220
Status:Published
Keywords:laser-induced breakdown spectroscopy (LIBS), data exploration, field work, planetary analogue site, Aeolian island Vulcano, elemental analysis, geochemical
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Robotics
DLR - Research area:Raumfahrt
DLR - Program:R RO - Robotics
DLR - Research theme (Project):R - OptoRob [RO]
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > In-Situ Sensing
Institute of Planetary Research > Planetary Physics
Deposited By: Rammelkamp, Kristin
Deposited On:08 Aug 2023 15:28
Last Modified:07 Mar 2024 09:52

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