Fidonet Portal






From: Dan Richter (1:317/3)
To: All
Date: Sat, 10.04.21 13:00
MODIS Pic of the Day 10 April 2021
April 10, 2021 - Northwestern Madagascar

Follow @NASA_MODIS

Madagascar
Tweet
Share

Green vegetation, red soils, and muddy rivers color northeastern
Madagascar at the end of the rainy season in early April 2021. The
Moderate Resolution Imaging Spectroradiometer (MODIS) on board NASA’s
Terra satellite acquired this true-color image on April 4.

Northwestern Madagascar has been described as a mosaic of dry deciduous
forest, degraded secondary forests, and grasslands. Roughly 2,000 years
ago—before widespread human habitation and impact on the island—this
region was thickly covered in forest. Over time, the forest was burned,
primarily to make way for agriculture and pasturage, leaving secondary
grasslands behind. While undisturbed dry deciduous forests teem with
life, giving home to a high number of endemic plant and animal species,
the grasslands are relatively sterile ecosystems with low diversity and
a high number of non-native plant species. While remnant forests tend
to be small and disconnected in a patchwork-like pattern with
grasslands interspersed, the forests are still vitally important to
biodiversity on the island.

Most of Madagascar’s rivers originate in the highlands in the island’s
interior. They pick up large amounts of sediment there, often from the
iron-rich red soils and rocks called laterites. Those colorful waters
flow down toward one of several silty deltas along the coast. The
largest river in this image (and in Madagascar) is the Betsiboka River.
It appears muddy-red, with braided channels that pour into the
Mozambique Channel. The color comes from iron-rich sediment that has
been washed into the river in the high central plateau region and the
mountains, then carried northwestward to the broad coastal delta.

Image Facts
Satellite: Terra
Date Acquired: 4/4/2021
Resolutions: 1km (176.3 KB), 500m (482.5 KB), 250m (322.2
KB)
Bands Used: 1,4,3
Image Credit: MODIS Land Rapid Response Team, NASA GSFC



https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2021-04-10

--- up 2 weeks, 1 day, 22 hours, 9 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)

ABOUT

This forum contains echomail areas hosted on Nightmare BBS You can browse local echomail areas, italian fidonet areas and a selection of international fidonet areas, reading messages posted by users in Nightmare BBS or even other BBSs all over the world. You can find file areas too (functional to fidonet technology). You can browse echomail areas and download files with no registration, but if you want to write messages in echomail areas, or use fidonet netmail (private messages with fidomet technology), you have to register. Only a minimal set of data is required, functional to echomail and netmail usage (name, password, email); a registration and login with facebook is provided too, to allow easy registration. If you won't follow rules (each echomail areas has its own, regularly posted in the echomail), your account may be suspended;

CONTACT