DOI: 10.1016/j.epsl.2017.10.028
Scopus记录号: 2-s2.0-85033555991
论文题名: Using satellite imagery to identify and analyze tumuli on Earth and Mars
作者: Diniega S. ; Sangha S. ; Browne B.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 482 起始页码: 52
结束页码: 61
语种: 英语
英文关键词: Earth
; inflated flows
; Mars
; remote sensing
; satellite images
; tumulus
Scopus关键词: Earth (planet)
; Planets
; Remote sensing
; Satellite imagery
; Formation model
; Independent measurement
; inflated flows
; Magmatic pressure
; Mars
; Morphometrics
; Satellite images
; tumulus
; Satellites
; crater
; dome
; Earth
; lava flow
; Mars
; morphometry
; remote sensing
; satellite imagery
; California
; United States
英文摘要: Tumuli are small, dome-like features that form when magmatic pressures build within a subsurface lava pathway, causing the overlying crust to bulge upwards. As the appearance of these features has been linked to lava flow structure (e.g., underlying lava flow tubes) and conditions, there is interest in identifying such features in satellite images so they can be used to expand our understanding of lava flows within regions difficult to access (such as on other planets). Here, we define a methodology for identifying (and measuring) tumuli within satellite imagery, and validate it by comparing our results with fieldwork results of terrestrial tumuli reported in the literature and with independent measurements we made within Amboy Field, CA. In addition, we present aggregated results from the application of our methodology to satellite images of six terrestrial fields and seven martian fields (with >2100 tumuli identified, per planet). Comparisons of tumuli morphometrics on Earth and Mars yield similarities in size and overall shape, which were surprising given the many differences in the environmental and planetary conditions within which these features have formed. Given our measurements, we identify constraints for tumulus formation models and drivers that would yield similar shapes and sizes on two different planets. Furthermore, we test a published hypothesis regarding the number of tumuli that form per a square kilometer, and find it unlikely that a diagnostic “tumuli density” value exists. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110137
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., M/S 321-630, Pasadena, CA 91109, United States; University of California, Los Angeles (UCLA), Los Angeles, CA, United States; Humboldt State University, Arcata, CA, United States
Recommended Citation:
Diniega S.,Sangha S.,Browne B.. Using satellite imagery to identify and analyze tumuli on Earth and Mars[J]. Earth and Planetary Science Letters,2018-01-01,482