Gwyddorau Amgylcheddol a’r Ddaear
Hercynian orogeny
100%
quantitative analysis
85%
hazard
64%
vulnerability
49%
caldera
49%
tsunami
44%
emigration
38%
extinction
38%
disaster
37%
immigration
35%
Markov chain
33%
distribution
32%
coral
27%
geographic information system
26%
volcano
25%
analysis
24%
mitigation
23%
limestone
23%
infrastructure
22%
submarine landslide
21%
Tournaisian
20%
earthquake
20%
paradigm shift
19%
ground conditions
19%
matrix
18%
holistic approach
18%
volcanic arc
17%
risk reduction
16%
conceptual framework
16%
natural hazard
16%
seismic hazard
15%
integrated approach
15%
archipelago
15%
coexistence
15%
amplification
14%
population growth
14%
screening
13%
volcanic eruption
12%
beach
12%
fossil
11%
damage
9%
transition
9%
planning
9%
ecosystem
8%
history
8%
sea
8%
loss
8%
program
8%
energy
7%