Detailed Regional Magnetic Mapping on a Bike, A Case Study from Northern Israel

Uri Schattner, Amit Segev, Valentin Mikhailov, Michael Rybakov, Vladimir Lyakhovsky

Research output: Contribution to journalArticlepeer-review

Abstract

This study presents new regional Total Magnetic Intensity and Reduced to Pole (TMI and RTP, respectively) magnetic anomaly maps of northern Israel and NW Jordan (10,620 km2) in an unprecedented 1-km grid spacing. The maps quantitatively integrate new ground data, collected along 5000 km using the bike-mag design, with all available marine and aerial magnetic surveys previously conducted. The removal of anthropogenic influences during processing is evident from a comparison of the resulting maps with the distribution of infrastructure. The study discusses the correlation between previously mapped magmatic outcrops and the new RTP anomalies. This correlation suggests that the subsurface magmatic bodies are broader than their surficial outcrops. RTP anomalies found over areas free of surface basaltic outcrops indicate subsurface causative bodies. Some of these bodies were previously identified in wells. The complete spatial coverage of the RTP map allows linking these sporadic occurrences and placing them into the regional geological context. The detailed map breaks down the previous course anomalies and allows a better understanding of magmatic events spanning from the Jurassic to the present. This study demonstrates the robustness and efficiency of the bike-mag for ground data acquisition, and the integration procedures for producing maps from a variety of sources and parameters.

Original languageEnglish
JournalPure and Applied Geophysics
DOIs
StateAccepted/In press - 2022

Bibliographical note

Funding Information:
This study was supported by the Israel Water Authority, the Geological Survey of Israel, and the Israel Ministry of Energy. The authors have no relevant financial or non-financial interests to disclose. All authors contributed to the data acquisition, analysis, discussions, and writing of the manuscript.

Funding Information:
The authors thank the dedicated colleagues and friends who escorted and assisted the extensive fieldwork: Michael Kitin, Dan Hochberg, Rami Madmon, Shlomo Ashkenazi, Shirli Shaiak, Yaakov Mizrachi, Oria Vanunu, Margaret Reznikov, Michal Rosenthal, Reli Wald, and Hallel Lutsky. We thank Yossi Meltzer from the Survey of Israel for fruitful discussions. We are grateful for our co-author Michael Rybakov who, over the years, brought in his extensive field and lab experience. We are grateful for the continuous support from Yakov Livshitz from the Israel Water Authority. V. Mikhailov was supported by a state task of the Schmidt Institute of Physics of the Earth, Russian Academy of Sciences (IPE RAS). U. Schattner thanks Reuven Gafni Sztejfman and Yanai Raitner from Rosen & Meents bike shop for their dedicated service, openness, and original suggestions, which greatly supported the fieldwork. We are grateful for the constructive remarks from the Editor and reviewers.

Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG.

Keywords

  • Magnetic data acquisition
  • Magnetic data processing
  • Quantitative data integration
  • Reduced To Pole
  • Total Magnetic Intensity

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

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