Не уверен, что не боян, но наброшу.

Итак, в лето 6987 от сотворения мира от небесной тверди отвалился кусок в виде железного астероида диаметром в 100 метров и упал этот астероид аккуратно посередине западной части Черного моря. Онлайн-калькулятор дает такие последствия на удалении в 250 км от точки удара:

Energy:
Energy before atmospheric entry: 1.31 x 1018 Joules = 3.13 x 102 MegaTons TNT
The average interval between impacts of this size somewhere on Earth during the last 4 billion years is 1.5 x 104years

Major Global Changes:
The Earth is not strongly disturbed by the impact and loses negligible mass.
The impact does not make a noticeable change in the tilt of Earth's axis (< 5 hundreths of a degree).
The impact does not shift the Earth's orbit noticeably.

Atmospheric Entry:
The projectile begins to breakup at an altitude of 20400 meters = 66800 ft
The projectile reaches the ground in a broken condition. The mass of projectile strikes the surface at velocity 23.2 km/s = 14.4 miles/s
The impact energy is 1.12 x 1018 Joules = 2.68 x 102MegaTons.
The broken projectile fragments strike the ground in an ellipse of dimension 0.391 km by 0.276 km

Crater Dimensions: 

 The crater opened in the water has a diameter of 4.45 km ( = 2.76 miles ). 

 For the crater formed in the seafloor: 
 Crater shape is normal in spite of atmospheric crushing; fragments are not significantly dispersed. 

 Transient Crater Diameter: 431 meters ( = 1410 feet ) 
 Transient Crater Depth: 152 meters ( = 500 feet ) 

 Final Crater Diameter: 539 meters ( = 1770 feet ) 
 Final Crater Depth: 115 meters ( = 376 feet )     
 The crater formed is a simple crater  

 The floor of the crater is underlain by a lens of broken rock debris (breccia) with a maximum thickness of 53.2 meters ( = 174 feet ). 
 The volume of the target melted or vaporized is 1630 m3 = 57700 feet3  
 Roughly half the melt remains in the crater

Thermal Radiation: 

 The fireball is below the horizon. There is no direct thermal radiation.

Seismic Effects: 

 The major seismic shaking will arrive approximately 50 seconds after impact. 
 Richter Scale Magnitude: 3.8 
 Mercalli Scale Intensity at a distance of 250 km: 

     Nothing would be felt. However, seismic equipment may still detect the shaking.

Ejecta: 

 Almost no solid ejecta reaches this site.

Air Blast: 

 The air blast will arrive approximately 12.6 minutes after impact. 
 Peak Overpressure: 1550 Pa = 0.0155 bars = 0.22 psi 
 Max wind velocity: 3.62 m/s = 8.11 mph 
 Sound Intensity: 64 dB (Loud as heavy traffic)

Tsunami Wave: 

 The impact-generated tsunami wave arrives approximately 38.3 minutes after impact. 

 Tsunami wave amplitude is less than 5.5 meters ( = 18.2 feet).

Если с физическими последствиями всё понятно, то каковы последствия политические и исторические? Что станется с Османской империей? Как это скажется на остальных её соседях?