Aug 29 2015, 06:55 Group: Grid Cop, 5éme Corbin
Places on Earth can develop dangerous conditions in a local area, or for a limited time, that might be more extensive on another world. For example:Meltwater rivers of GreenlandOn Greenland's ice sheet, a vast icy landscape crisscrossed by turquoise rivers and dotted with meltwater lakes, a small cluster of orange camping tents popped up in late July. The camp, home for a week to a team of researchers, sat by a large, fast-flowing river. Just half a mile (a kilometer) downstream, the river dropped into a seemingly bottomless moulin, or sinkhole in the ice ..
This camp was Laurence C. Smith's field research site in western Greenland. Smith, a professor and chair of geography at the University of California, Los Angeles, and his NASA-funded team were studying the hydrology of the ice sheet -- how the shifting network of streams and rivers that form during the melt season transport water from the surface of the ice to the ocean, contributing to sea level rise.
.. the scientists go to great lengths to ensure safety. Were anyone to slip and fall in the frigid waters, he or she would be quickly swept away into the moulin without any possibility of rescue, disappearing forever. For this reason, researchers must tether themselves to ropes when working near the rivers.
Another might be the crystal caves of northern Mexico
. This post has been edited by uncle_jimbo on Aug 29 2015, 06:59
Oct 2 2017, 07:51 Group: Grid Cop, 5éme Corbin
Challenge #26 gives some fairly standard description of volcanoes and lava forms, but more notably, an extract from Grand Survey that relates their occurrence and behaviour to various characterictics of planets (edit: which might benefit from something at hand to translate UWPs, to make them more usable for Alternity).
This post has been edited by uncle_jimbo on Dec 24 2018, 08:26
May 21 2018, 04:13 Group: Grid Cop, 5éme Corbin
Currently in Hawaii: Lava spatter injuries, lazeThe possibility of the lava flows reaching the ocean, meanwhile, threatens to release toxic gases in a plume called a "laze".
When molten lava hits sea water, the chemical reaction can create "hazy and noxious conditions" laced with hydrochloric acid and tiny particles of glass, the US Geological Survey (USGS) says.
"Even the wispy edges of it can cause skin and eye irritation and breathing difficulties," USGS warned.
edit: a different condition: vog This post has been edited by uncle_jimbo on May 23 2018, 02:49
Dec 10 2018, 08:01 Group: Grid Cop, 5éme Corbin
It sounds spectacular, actually:The Sarlacc Pit
Jan 10 2019, 08:59 Group: Grid Cop, 5éme Corbin
|Author (uncle_jimbo @ Oct 2 2017, 18:51)|
| Challenge #26 gives some fairly standard description of volcanoes and lava forms, but more notably, an extract from Grand Survey that relates their occurrence and behaviour to various characterictics of planets (edit: which might benefit from something at hand to translate UWPs, to make them more usable for Alternity). |
There's the True Density, K, that I mentioned
, table not included in this excerpt.
So to summarise:
This post has been edited by uncle_jimbo on Jan 10 2019, 09:05
- Determine if a non-gas-giant planet has a molten core, a non-molten rocky body, or icy composition. Sub-Terran and Cold worlds and those with thin atmospheres are more likely to be icy, less likely to have a molten core.
- Molten core worlds have separate tectonic plates, more of them as they get larger and have more extensive oceans.
- Seismic and volcanic activity increases with a molten core, closer and larger satellites, and a closer orbit to a more massive star. The GMG planet generation procedure should provide most of this, making some assumptions for satellite orbits.
- It seems likely, though the magazine doesn't cover it, a GM could do a very similar thing for moons. Further, we might be more interested than in 1986 in the structure and activity of icy bodies.
- Likelihood, behaviour and damage follows for earthquakes and volcanoes.