Southern Ocean
64°19′S 62°57′W
Melchior Islands
Part of Palmer Archipelago
The Melchior Islands are a group of many low, ice-covered islands lying near the center of Dallmann Bay between Brabant Island and Anvers Island in the Palmer Archipelago, Antarctica. They were first seen but left unnamed by a German expedition under Eduard Dallmann, 1873–74.

Chart
Overview
The Melchior Islands are a group of many low, ice-covered islands lying near the center of Dallmann Bay between Brabant Island and Anvers Island in the Palmer Archipelago, Antarctica. They were first seen but left unnamed by a German expedition under Eduard Dallmann, 1873–74. The islands were resighted and roughly charted by the Third French Antarctic Expedition under Jean-Baptiste Charcot, 1903–1905. Charcot named what he believed to be the large easternmost island in the group "Île Melchior" after Vice Admiral Jules Melchior of the French Navy, but later surveys proved Charcot's Île Melchior to be two islands, now called Eta Island and Omega Island. The name Melchior Islands has since become established for the whole island group now described, of which Eta Island and Omega Island form the eastern part, while the Sigma Islands mark the northern limit of the islands. The group was roughly surveyed in 1927 by Discovery Investigations personnel in the RRS Discovery, and was resurveyed by Argentine expeditions in 1942 and 1943, and again in 1948. The semi-circular arrangement of Lambda, Epsilon, Alpha and Delta Islands forms a small harbor called Inner Harbor. Its descriptive name was probably given by Discovery Investigations personnel who roughly surveyed the harbor in 1927. It was resurveyed by Argentine expeditions in 1942, 1943 and 1948.
From Wikipedia, CC BY-SA 4.0
Census, cataloged
- Major islands2
- Minor islands10
- Islets20
- Rocks & skerries0
Major islands
Eta Island
- Area
- 3.5 km²
- High point
- 171 m
5 nmi) long, which lies immediately north of Omega Island in the Melchior Islands, Palmer Archipelago.
Omega Island
- Area
- 3.3 km²
- High point
- 195 m
7 kilometres (2 nmi) long, which lies immediately south of Eta Island in the Melchior Islands, Palmer Archipelago.
Minor islands

Lambda Island
- Area
- 1.5 km²
- High point
- 136 m

Gamma Island
- Area
- 0.73 km²
- High point
- 151 m
Bremen Island
- Area
- 0.49 km²
- High point
- 122 m
Kappa Island
- Area
- 0.23 km²
- High point
- 78 m
Delta Island
- Area
- 0.14 km²
- High point
- 72 m
Theta Islands
- Area
- 0.14 km²
- High point
- 22 m
Unnamed island
- Area
- 0.12 km²
- High point
- 72 m
Unnamed island
- Area
- 0.1 km²
- High point
- 39 m
Pabellón Island
- Area
- —
size unknown
Tripod Island
- Area
- —
size unknown
Islets
- Unnamed island23 m · 0.08 km²
- Unnamed island33 m · 0.08 km²
- Unnamed island34 m · 0.06 km²
- Peace Island9 m · 0.06 km²
- Epsilon Island33 m · 0.05 km²
- Psi Islands13 m · 0.05 km²
- Alpha Island35 m · 0.04 km²
- Unnamed island24 m · 0.03 km²
- Unnamed island34 m · 0.03 km²
- Unnamed island0.02 km²
- Unnamed island35 m · 0.02 km²
- Unnamed island0.02 km²
Also in the area
Inside the group's outline but not confirmed as members by any source.
- Unnamed island102 m · 0.43 km²
- Unnamed island0.17 km²
- Unnamed island60 m · 0.16 km²
- Unnamed island73 m · 0.13 km²
- Unnamed island0.11 km²
- Unnamed island19 m · 0.07 km²
- Unnamed island10 m · 0.06 km²
- Unnamed island10 m · 0.06 km²
- Unnamed island21 m · 0.06 km²
- Unnamed island0.05 km²
- Unnamed island0.05 km²
- Unnamed island0.05 km²
Figures
Comparative heights
To the same scale
Islands by area
| Eta Island | 3.5 km² |
| Omega Island | 3.3 km² |
| Lambda Island | 1.5 km² |
| Gamma Island | 0.73 km² |
| Bremen Island | 0.49 km² |
| Unnamed island | 0.43 km² |
| Kappa Island | 0.23 km² |
| Unnamed island | 0.17 km² |
| Unnamed island | 0.16 km² |
| Delta Island | 0.14 km² |
| Theta Islands | 0.14 km² |
| Unnamed island | 0.13 km² |
| Unnamed island | 0.12 km² |
| Unnamed island | 0.11 km² |
| Unnamed island | 0.1 km² |
| Unnamed island | 0.08 km² |
| Unnamed island | 0.08 km² |
| Unnamed island | 0.07 km² |
| Unnamed island | 0.06 km² |
| Unnamed island | 0.06 km² |
| Unnamed island | 0.06 km² |
| Peace Island | 0.06 km² |
| Unnamed island | 0.06 km² |
| Epsilon Island | 0.05 km² |
| Unnamed island | 0.05 km² |
| Psi Islands | 0.05 km² |
| Unnamed island | 0.05 km² |
| Unnamed island | 0.05 km² |
| Alpha Island | 0.04 km² |
| Unnamed island | 0.04 km² |
| Unnamed island | 0.03 km² |
| Unnamed island | 0.03 km² |
| Unnamed island | 0.02 km² |
| Unnamed island | 0.02 km² |
| Unnamed island | 0.02 km² |
| Unnamed island | 0.02 km² |
| Beta Island | 0.01 km² |
| Unnamed island | 0.01 km² |
| Unnamed island | 0.01 km² |
| Unnamed island | 1 ha |
| Unnamed island | 0.7 ha |
| Unnamed island | 0.6 ha |
| Unnamed island | 0.6 ha |
| Unnamed island | 0.5 ha |
Groups within
Photographs

Argentina operates the summer-only Melchior Base on the Melchoir Islands in Dallmann Bay between Brabant and Anvers islands. The station has been used for weather and marine biology research.
One of M/V Lyubov Orlova's zodiacs (motor pontoons) has already left the ship's gangway and now runs into Mechior Islands archipelago.

One of the Melchior Islands (likely Delta Island).

A view of Brabant Island from north of the Melchior Islands.
Base Melchior de Argentina. Archipiélago Melchior.

Earth Science and Remote Sensing Unit, Lyndon B. Johnson Space Center / Public domain

Voilier devant une aiguille rocheuse - Archipel Melchior - Péninsule Antarctique.

Weddell seal (Leptonychotes weddelli), a mammal in Antarctica. They weigh up to 400 kilograms and are up to 3 meters long. Seen at the Melchior Islands, a group of ice-covered islands in the Dallmann Bay.

Weddell seal (Leptonychotes weddelli), a mammal in Antarctica. They weigh up to 400 kilograms and are up to 3 meters long. Seen at the Melchior Islands, a group of ice-covered islands in the Dallmann Bay.
Sources
Facts
Photographs
- Melchior Base (16109253078). David Stanley from Nanaimo, Canada / CC BY 2.0
- Melchior Islands Zodiac Cruise. Lilpop,Rau&Loewenstein / CC BY-SA 3.0
- Melchior-islands 20241230 231010919-delta-island. Bangerth / CC BY 4.0
- Melchior-islands 20241231 001107241-brabant-island. Bangerth / CC BY 4.0
- Melchior1. Jorge Valdés R. Jorval / Public domain
- ISS029-E-14673 - View of Antarctica - Melchior Islands - Gand Island - Anvers Island - Cape Grönland - Fournier Bay - Guépratte Island - Andrews Point - Clifford Peak - Gerlache Strait - Lemaire Island - Paradise Harbour (cropped). Earth Science and Remote Sensing Unit, Lyndon B. Johnson Space Center / Public domain
- ArchipelMelchior 01. BluesyPete / CC BY-SA 3.0
- ArchipelMelchior 04. BluesyPete / CC BY-SA 3.0
- 00 0203 Weddell seal in Antarctica - Melchior Archipelago. W. Bulach / CC BY-SA 4.0
- 00 0504 Weddell seal in Antarctica. W. Bulach / CC BY-SA 4.0
- ISS029-E-14679 - View of Antarctica - Brabant Island - Mount Bulcke - Mount Beddie - Dallmann Bay - Melchior Islands - Gand Island - Anvers Island - Gerlache Strait (cropped). Earth Science and Remote Sensing Unit, Lyndon B. Johnson Space Center / Public domain