How to know subsidence or uplift from the pixel signs

[falahfakhri]

Have a look at this place,

Displacement map

Dear all, Please correct me, if I am wrong? As you see in below picture, displacement is between -5cm to 26 cm.In my idea, based on Q2-9．Why do an interferogram from ascending orbits and one from descending orbits look different? http://vldb.gsi.go.jp/sokuchi/sar/qanda/qanda-e.html#q2-8 We can tell from -5 cm to 0 cm, ice change near to satellite (it can be uplift_vertical_ or it can be horizontal displacement toward satellite). We can tell from 0 cm to 26 cm, ice change far from satelli…