Description

Any natural body that comes from outside the Earth's atmosphere. Can be subdivided into: - First-order meteorite; diameter >600m. - Second-order meteorite; diameter <600m.

Category

Category of FEP

Geosynthesis

Sub-category

Sub-category of FEP

External geodynamic events - other

Ondraf Niras FEP Number

Ondraf Niras FEP Number

14

FEP Effects

Description of FEP Effects

First-order meteorites are sufficiently large that an impact could disrupt the GDF directly. Second-order meteorite impacts may cause fracturing and enhanced groundwater flow. Reduced overlying rock mass, changes in stress field. Changes in host rock pore structure; fracturing and brecciation; creation of preferential pathway; gradient and hydraulic conductivity changes. Changes in host rock geochemistry (heat, fusion, vitrification). Dilution capacity of aquifer changes.

Reference(s)

References Relevant to FEP

Shown on Fig 3 of ER-184_I2

NEA TN2 IFEP Reference(s)

Related IFEPs from the NEA TN2 List of Proposed IFEP Revisions [NEA/RWM/R(2013)8]

1.5.1 Meteorites and human space debris.