The convergent indications, textual strata, onomastic residues, and the fragmentary archaeological horizon, collectively imply that the northeastern littoral and eastern hinterland of the Gulf of Aqaba once witnessed a circumscribed prehistoric inundation, a phenomenon faintly echoed in later inscriptional and toponymic memory.

The Gulf of Aqaba forms a long, narrow, and exceptionally deep embayment at the northern terminus of the Red Sea, positioned between the Sinai Peninsula to the west and the Arabian Peninsula to the east. Extending roughly 160–180 km in length and 14–26 km in width, it reaches a maximum depth of approximately 1,850 m, making it one of the most profound marine depressions in the world.

Morphologically, the Gulf of Aqaba constitutes a steep‑walled, elongated basin—an abrupt geological chasm in stark contrast to its sister gulf, the Gulf of Suez, whose depth rarely exceeds 100 m. The Aqaba basin plunges nearly 4 km below the summits of the surrounding mountains, producing a dramatic vertical relief unmatched elsewhere along the Red Sea margins.

The geological distinctiveness of Aqaba basin arises from the fact that it is not a single continuous trough but a chain of active pull‑apart basins generated along the southern segment of the Dead Sea Transform. As the Arabian Plate migrates northward relative to the African Plate, the crust is stretched, fractured, and displaced. This tectonic motion causes the seafloor to drop sharply, carving out a deep, narrow rift that functions as a marine corridor.

The Gulf of Aqaba basin is completely unique because it is not just one giant bowl, but a collection of multiple active pull-apart basins.

The basin’s extreme depth, enclosed configuration, and hyper‑arid surroundings promote intense evaporation, resulting in highly saline waters. Structurally, the seafloor is divided into three principal sub‑basins, (Northern, Central and Southern sub‑basin), each containing distinct deep points:

A. Northern Basin – Eilat Deep, reaching ~900 m
B. Central Basin – Aragonese Deep, the deepest point at ~1,850 m – Arnona Deep
C. Southern Basin – Dakar Deep, ~1,300 m – Tiran Deep, ~1,300 m – Hume Deep

Because these basins are deep, trapped, and surrounded by a scorching desert, the water evaporates rapidly, making it incredibly salty.

Significant seismic hazard zone

A recent comprehensive study, “The Seismogenic Characteristics of the Gulf of Aqaba Zone” (Journal of King Saud University, 2024), delineates three principal sub‑seismogenic domains within the Gulf, each aligned with a distinct structural fault system. These zones—the Aragonese, Arnona, and Aqaba faults—correspond to the pull‑apart basin architecture that characterizes the Gulf of Aqaba’s tectonic framework.

The study examines how earthquakes occur in the Gulf of Aqaba and evaluates the possible risks they pose to this gulf and the region to its east.

To do this, the researchers created an updated list of past earthquakes, all converted to the same moment‑magnitude scale. Using this catalogue, they applied statistical methods to estimate key measures of earthquake activity in the Gulf of Aqaba. These include the largest earthquake that might occur (Mmax), how often earthquakes of different sizes happen (β‑value), and the average yearly rate of earthquakes (λ).

The study divides the region into three main earthquake‑producing zones: the Aqaba fault, the Aragonese fault, and the Arnona fault.

The results show that ground shaking could reach about 385 cm/s² (Richter) for an earthquake expected roughly once every 475 years (with a 10% chance of happening), 498 cm/s² (Richter) for an event expected every 975 years (5% chance), and 688 cm/s² (magnitude 6.5 to 7.0 on the Richter scale) for an event expected every 2475 years (2% chance).

The response spectrum indicates that these strong ground motions occur mainly at high frequencies (between 5 and 10 Hz), which is important because soils and buildings near the Gulf may respond strongly to vibrations in this range.

Overall, the study shows that the Gulf of Aqaba is a major seismic hazard zone, (an area with a high risk of earthquakes). The Aragonese sub‑zone, in particular, could realistically produce an earthquake as large as magnitude 7.7 on the Richter scale.

There is a possibility that the “Aragonese seismogenic zone” could experience an earthquake with a maximum magnitude of 7.7, highlighting a significant seismic hazard in the region.

1995 Gulf of Aqaba earthquake

The 1995 Gulf of Aqaba powerful earthquake occurred on November 22 at 06:15 local time and registered 7.3 on Richter scale. The epicenter of earthquake was located in the central segment of the Gulf, (Central Basin).

The earthquake was the largest event to occur on along the DST (Dead Sea Transform) during the 20th century and was felt up to 600 km (370 mi) away. The period of aftershocks carried on for over a year with many exceeding magnitude 5. Within several hours of the mainshock a number of small earthquakes occurred along the DST 500 km (310 mi) north of the epicenter. Analysis of these earthquakes suggest that they may have been remotely triggered by the Gulf of Aqaba mainshock.
The Dead Sea fault system runs from the Red Sea north to a triple junction in south-central Turkey and consists of a main fault and several secondary faults. The fault system is at its widest and deepest in the gulf where a transition from proto-oceanic rifting to transform faulting occurs. Moving northward through Lebanon and Syria, where the DST is known as the Yammouneh fault, the trace follows a restraining bend and splits into several strands that include the Serghaya and Rachaya faults. These strands are believed to be the source of the devastating Near East earthquakes of 1759.

Several studies in the 80s and 90s indicate that there were two or possibly three large earthquakes in the gulf region in the last 2000 years with magnitudes estimated to be 6.5–7.0 based on macroseismic data.

The 1068 Near East earthquake, was a pair of major earthquakes that occurred in 1068; the first of which whose epicentre was in the area of Tabuk.^[4]

A recent geomorphological investigation, “Discovery of the Deep‑Sea NEOM Brine Pools in the Gulf of Aqaba, Red Sea” (Nature, 2022), identifies significant linkages between the Aqaba Brine Pools and regional geohazard processes, including earthquakes, tsunamis, and episodic flash‑flood events.

In this study, researchers used seafloor mapping and geophysical tools to identify a group of brine pools in the Gulf of Aqaba: one large pool about 10,000 m² in size and three much smaller ones. They then collected sediment cores and samples of the brine itself to understand what these pools contain and how they formed.

Deep‑sea brine pools are extremely salty pockets of water on the seafloor. Because they contain no oxygen, no large animals can live in them or disturb the mud. This makes them excellent places for preserving layers of sediment just as they were originally deposited.

The main pool holds a well‑preserved record of at least 1,200 years. Its layers include:

• Turbidites—sediment deposited suddenly, probably from flash floods or earthquakes.
• Material washed in by tsunamis—evidence of past large waves carrying land‑based sediment into the basin.

Overall, these brine pools act like natural archives, preserving clear evidence of past climate events, floods, earthquakes, and tsunamis in the region.

Brine Pools & Tsunami

Brine Pools: A brine pool, (also called “underwater lake”, “deepwater lake” or “brine lake”), is a volume of brine collected in a seafloor depression. These pools are dense bodies of water that have a salinity that is typically three to eight times greater than the surrounding sea water.

Brine pools are lethal underwater environments that kill most marine animals within seconds or minutes through extreme osmotic shock, suffocation, and toxic poisoning.

As detailed on Wikipedia, these underwater lakes form on the ocean floor when ancient salt deposits dissolve into dense, unmixed pockets of water. They act as absolute dead zones for any standard marine life that wanders inside.

Why Brine Pools Are Deadly?

• Extreme Salinity: The water is 3 to 8 times saltier than the regular sea. This hyper-salinity causes instant osmotic shock, draining water from the cells of any creature that touches it.
• Zero Oxygen (Anoxia): The dense brine does not mix with normal seawater. Animals cannot breathe, leading to rapid cerebral hypoxia and suffocation.
• Toxic Chemicals: The pools are heavy with poisonous compounds like hydrogen sulfide and methane. These toxins shut down the nervous systems of fish and crabs almost immediately.

The “Underwater Graveyard” Effect:

• No Decomposition: Because the water contains no oxygen and lacks microbial decomposers, bodies do not rot.
• Perfect Preservation: Unfortunate creatures that fall in are pickled and preserved with their soft tissues intact for decades or centuries.

Earthquakes Tsunamis & Flooding

Earthquakes can trigger severe flooding as a secondary disaster through tsunamis, land deformation, liquefaction, and broken infrastructure.
How Earthquakes Cause Flooding:
–Tsunamis: Large undersea earthquakes displace massive amounts of sea water, creating giant waves that rush ashore and flood coastal areas.
-Landslides: Quakes trigger landslides that block rivers and form temporary, unstable natural dams. When these barriers eventually break, they send catastrophic flash floods downstream.
-Liquefaction: Intense shaking mixes underground water with loose soil, causing groundwater to rise and flood the ground surface.
-Land Elevation Changes: Tectonic movements can permanently lower land levels near bodies of water , permanently increasing local flood risks.

Taken together, these events and the associated scientific observations, analyses, and investigations constitute compelling evidence that the northern and eastern margins of the Gulf of Aqaba have repeatedly been affected, throughout their geological and historical development, by seismic activity, tsunami incursions, and—most notably—episodes of inundation by highly saline, anoxic waters. The data further imply that people overtaken by such extreme floods were effectively ‘pickled,’ with soft tissues remaining preserved for extended periods—decades, and in some cases centuries—due to the absence of oxygen and the exceptional salinity inhibiting normal processes of decay.

If this region did in fact experience a catastrophic incursion of highly saline, anoxic waters in the earliest phases of human history, such an event would almost certainly have left behind a constellation of hypersaline basins — among them the Dead Sea, the palaeolacustrine system known as Lake Lisan, the Wadi al‑Sirḥān depression (itself the remnant of an ancient lake), and the desiccated basins now embedded within the Nefud Desert.

The landscape during the Late Bronze and Early Iron Ages must have appeared a mosaic of hypersaline hollows dispersed across rust‑colored, eroded hill‑ranges, evocative of the terrain characteristic of the Ḥismā region.

The Ḥismā region is a striking sandstone wilderness and plateau located in northwest Saudi Arabia and southern Jordan, famous for its dramatic ship-like mountain formations and ancient rock inscriptions.

Topography of the Region

Lake Lisan:

Lake Lisan was a prehistoric hypersaline lake that filled the Jordan Rift Valley during the late Pleistocene epoch, existing from roughly 70,000 to 14,000 years ago. The lake left behind a layer of lacustrine sediment that blankets the Jordan Valley with terraces of sediment up to 40 m thick. These sediments are commonly called marls and are composed of layers of true loam and calcareous silt loams mixed with other chemicals and salts.^[2] At its height, the lake covered several other basins in the area with a maximum area of ca. 2000 km², a length of 200 km and a width of no more than 17 km.

Wadi Al-Sirhan:

Wadi Al-Sirhan is located in northwestern Saudi Arabia and extending into Jordan, it spans about 300 kilometers. Despite its name, Wadi Al-Sirhan is not a true river valley (wadi) but rather a massive, elongated closed tectonic depression and ancient lake basin. Geologically, Al-Sirhan is a low-lying graben (a depressed block of the crust) that once held an ancient large (probably saline) lake. Today, it functions as a huge internal drainage basin. When rare rains occur, the surrounding network of ephemeral streams, (true wadis), empty their seasonal runoff into this depression. These rain waters, through millennia have drastically changed its saline nature.

The Nefud Desert:

The Nefud Desert was once a lush region filled with active freshwater lakes, wetlands, and rivers during ancient climate phases known as “Green Arabia”. [1, 2]

Ancient Lake Phases:

• Upper Pleistocene Lakes: Research from the U.S. Geological Survey shows that “large lakes occurred around the dune area and in the interior of the sand sea” roughly 34,000 to 24,000 years ago [. These lakes were deep and covered large areas. [1]
• Holocene Swamps: Later wet periods brought smaller bodies of water, which were “mostly swamps and were restricted to the interdune depressions” between 8,400 and 5,400 years ago [. [1]

Life in the Ancient Basin:

As noted in The Life, Art and Engineering of the Nafud Desert, reliable water supported extensive animal life and early human movements across northern Arabia. Ancient lakebeds have preserved the fossilized remains of extinct wildlife and early human footprints, proving the desert environment shifted dramatically over long spans of time. [1, 2, 3]

The discovery of an 85,000-year-old fossilised human finger in An Nafud in 2016 by Dr Mathieu Duval of Griffith University provided the earliest evidence of modern humans outside Africa and the Levant.

The Naqab desert:

Deep beneath this desert floor lies an ancient reservoir holding massive quantities of fossil brackish and saline water. This water has been trapped underground for hundreds of thousands of years. [1, 2]

A Lost History

The intersecting strands of evidence—textual layers, onomastic survivals, and the incomplete archaeological record—jointly suggest that the northeastern shore and eastern hinterland of the Gulf of Aqaba were once subjected to a bounded prehistoric flood, a disturbance dimly preserved in later inscriptional traditions and place‑name memory. It is a vanished chapter of regional history, its particulars obscured and largely unrecoverable.

01- The Flooded Country of Shasu

The Shasu were Semitic-speaking pastoral nomads inhabiting the southernmost reaches of the Levant—from southern Transjordan through the land of Midian—during the Late Bronze and Early Iron Ages.

In Egyptian sources, Shasu territory is designated by the phrase tꜣ šꜣsw (𓇾𓆷𓇓), conventionally translated as “the land of the Shasu,” but more literally as “the land of the nomads of the inundated/flooded terrain.”

Because Egyptian hieroglyphic writing is highly polyvalent, the interpretation of this phrase (𓇾 𓆷 𓇓) depends heavily on context. Individual signs may function as phonograms, logograms, or determinatives, and their semantic value shifts accordingly.

Egyptian hieroglyphs heavily depends on the context because the writing system is incredibly versatile and multi-layered. A single hieroglyphic sign can serve entirely different functions depending on how it is used in a word.

Egyptologists Frank J. Yurco and Michael G. Hasel have emphasized that the term Shasu is typically written with a land determinative (𓇾), rather than one indicating a people.

Moreover, references to the “foes of the Shasu” frequently employ the hill-country determinative, suggesting that Shasu operates as a topoethnonym—a designation for an ethnic group, tribe, or polity derived from a place-name.

For example: the Hebrew word “יָוָן” (Yavan) which means both Greece (the country) and the Greek people, depending on the context.

Topoethnonym: Specifically refers to a distinct ethnic or tribal group whose identity and historical ethnicity are named after their geographic homeland.

On this basis, several scholars interpret the constituent signs of the expression 𓇾𓆷𓇓 as follows:

• 𓇾 (tꜣ) — “land, earth, ground”; the standard determinative for a geographic region.
• 𓆷 (šꜣ / š) — “marsh, water basin”; a sign associated with inundated or flood-prone landscapes.
• 𓇓 (sw / nswt) — a plant sign, often compared to papyrus sedge, functioning here as part of the phonetic writing of šꜣsw.

Taken together, the phrase conveys not merely a tribal name but a geographic-ethnographic designation rooted in the environmental character of the Shasu’s territory.

02- The Flooded Western land of Martu/Amurru

In Sumerian (language Sumer), MAR.TU (or Martu) carries two distinct meanings depending on how the characters are used: it can refer to the Amorite people and their western homeland, or it can translate directly to a flood, floodstorm, or deluge. [1, 2, 3]

03- The Submerged Region of Ḥismā

Several medieval Arabic geographers record traditions asserting that portions of the Ḥismā region had once been submerged beneath “undrinkable waters“, a condition they explained—rather strikingly—as a lingering vestige of the Deluge of Noah. Parallel pseudo‑historical narratives from the same cultural milieu even claimed that Noah himself had resided in Ḥismā. While these accounts are clearly shaped by later mytho‑historical frameworks, they nonetheless intersect in suggestive ways with epigraphic indications from both Egypt and Mesopotamia—particularly references associated with the MAR.TU and (𓇾𓆷𓇓) designations—which imply that the eastern hinterland of the Gulf of Aqaba constituted a flood‑affected terrain for extended periods, possibly over several centuries.

Toponymy (study of place-names)

Toponymic inquiry operates as an interdisciplinary analytic framework, drawing simultaneously upon etymological reconstruction, historical and archival documentation, archaeological evidence, and regional‑geographical context to elucidate the processes through which places acquire, stabilize, and transmit their names across time. By correlating linguistic forms with environmental and cultural strata, toponymy can recover otherwise inaccessible historical information about a locality. Place‑names frequently preserve lexical traces of former ecological conditions—such as forests, wetlands, or characteristic fauna that have long since disappeared—and they often encode references to subsurface or concealed hydrological features, including springs, wells, or hazardous marshlands. In this way, toponymic data function as durable repositories of environmental memory, offering insight into past landscapes and human engagements with them.

Tabuk.. It is in the Name!

The land of Midian constituted an ancient geographic zone situated along the northwestern Arabian Peninsula, extending primarily along the eastern littoral of the Gulf of Aqaba.

In later historical usage, this same region is designated by the toponym Tabūk, a name that—prior to its association with a specific urban nucleus—functioned as a regional appellation rather than a settlement‑level designation. The city of Tabūk thus represents a case in which an urban center subsequently adopted the name of its wider territorial district.

Although Tabūk has often been interpreted as an Arabic formation, its linguistic profile more plausibly reflects an ancient Semitic substrate.

The name ” Tabūk” is attested in Neo‑Assyrian sources in the form tapu. Second century Alexandrine geographer Ptolemy also mentioned a place by the name ‘Tabawa‘, at the northwestern corner of Arabia.  A correspondence that strongly suggests that the Arabic final syllable ‑ūk constitutes a diachronic toponymic suffix, a later accretion not integral to the original lexical base.

Comparable suffixal developments are observable in several regional place‑names—Shoubak, Karak, Sakaka, and Nabak (the earlier designation of Qurayyat, as well as a coastal locality on the western shore of the Gulf of Aqaba)—indicating a broader morphological pattern in the historical toponymy of northwestern Arabia and southern Transjordan.

Philological Analysis of tapu

The consonantal skeleton of tapu is [t‑p], a configuration that aligns with well‑established Proto‑Semitic phonological developments. In Arabic, the Proto‑Semitic **voiceless bilabial stop:

$$\ast p$$

** underwent an unconditional shift to the **labiodental fricative:

$$\ast f$$

**, yielding the regular correspondence:

Proto‑Semitic *p → Arabic f (ف)

This shift is exemplified in numerous lexical items:

• Akkadian pāšu “axe” → Arabic fās (فاس)
• Hebrew paḥm “coal” → Arabic faḥm (فحم)

Accordingly, the root [t‑p] would surface in Arabic as [t‑f], permitting the historical form Tapu to be rendered phonologically as Tafu.

The Arabic root [ṭ‑f‑ʾ], phonetically proximate to the expected reflex of [t‑p], generates a semantic field associated with floating, overflowing, and inundation—e.g., ṭafā (طفا “to float”), ṭafaḥa (طفح “to overflow”), and ṭūfān (طوفان “flood, deluge”).

The convergence of these meanings with the hydrological character historically attributed to the Aqaba–Midian littoral lends additional plausibility to the identification of Tapu/Tabūk as a term originally linked to water dynamics, inundation, or flood‑prone terrain.

Arabic toponymy occasionally replaces Proto‑Semitic *p not with *f but with its voiced bilabial counterpart /b/—a phenomenon likely reflecting substrate influence or dialectal variation. This provides a plausible pathway from tapu → tabu → Tabūk (with later suffixation).

Egyptian: ȧkep

The ancient Egyptian word “ȧkep” (also transliterated as ꜥgb or ākeb) translates to a flood, deluge, or great body of water. It was often used to describe heavy rain-floods, the swelling of the Nile, or the primeval waters.

Depending on the Egyptologist’s transliteration system (such as E.A. Wallis Budge’s system), you may see it written as ȧkeb, ꜥgb, or agbe.

Medieval Egyptian and broader Arabic geographical literature frequently designates the southernmost extension of the Levant—particularly the northern Sinai corridor—by the toponym ʿAqabat Īlah or ʿAqabat Īliyā.

The form ʿaqaba(t) is grammatically feminine, contrasting with the masculine ʿaqab, and later furnished the basis for the designation of the Gulf of ʿAqaba.

The etymology of this place‑name remains contested. Its superficial homophony with Arabic al‑ʿaqabah (‘obstacle’, ‘steep or difficult passage’) has often encouraged misleading folk‑etymological associations.

More plausible, however, is a derivation from the ancient Egyptian lexeme ȧkep, attested in variant transliterations—ȧkeb, ākeb, ꜥgb, agb, agbe—depending on the Egyptological system employed (e.g., that of E. A. Wallis Budge).

In Egyptian usage, ȧkep denotes a flood, deluge, or expansive body of water, and is applied to phenomena ranging from torrential rain‑floods to the seasonal swelling of the Nile and even the primordial waters of cosmogonic discourse.

Within this philological horizon, the medieval toponym appears to preserve, however faintly, an older hydrological conception embedded in the region’s environmental vocabulary.

Meluḫḫa and Magan

Mesopotamian textual traditions consistently mention Meluḫḫa and Magan (or Makan) as extra‑Mesopotamian regions with which Sumerian, Akkadian, and later Assyrian polities engaged—whether through trade networks or through military expeditions. The precise geographic referent of Meluḫḫa remains a matter of sustained scholarly dispute, complicated further by modern nationalistic claims; as a number of reference works succinctly note: “the identification of Meluḫḫa remains an open question“. [01]

By contrast, Magan is commonly associated with the present-day Oman, although some scholarly views have proposed an identification with ancient Egypt.

Some scholars situate Meluḫḫa in the western Indian subcontinent, linking the term to the cultural sphere of the Indus Valley Civilization and treating it as a Sumerian designation for that region.

However, later Neo‑Assyrian sources—most notably the account of Ashurbanipal’s first campaign against Egypt in 667 BCE—appear to locate both Meluḫḫa and Magan in proximity to Egypt. [02]

The exact wording from Ashurbanipal’s Rassam Cylinder (Prism A) describing his first campaign against Egypt begins: “In my first campaign I marched against Magan and Meluhha, Taharqa, king of Egypt, (whom Esarhaddon, king of Assyria), the father who begot me, had defeated, and whose land he brought under his sway.“.

This presents a chronological and historical difficulty: Ashurbanipal’s campaign occurred more than a millennium after the collapse of the Indus Valley Civilization, making it unlikely that the Neo‑Assyrian “Meluḫḫa” referred to a region in South Asia. [02]

Yamani of Ashdodi:

• Cuneiform Phrase: Akkadian text written as:
• ana itû [māt Mu-ṣu-ri] šá pāṭu [māt Me-luḫ-ḫa]
• Literal translation: “To alongside Egypt, which is the area of Meluhha”.

This phrase is a line written in Standard Akkadian cuneiform transliteration. It comes from the royal inscriptions of the Assyrian king Sargon II (r. 721–705 BCE), specifically describing Yamani of Ashdod, a rebellious Philistine king who fled: “to the edge of Egypt, which belongs to Meluhha“, (when the Assyrian army approached). Or more accurate translation: (He went) “to the region adjacent to Egypt that belongs to Meluhha”.

As the Assyrian story has it, the Emer or king of Meluhha decided to arrest Yamani and send him to the Assyrian emperor Sargon II:

“The king of the land Meluḫḫa — who in … the land Uriṣṣu, an inaccessible place, (whose) route [… who]se ancestors [from the] distant [past] until now had never sent their mounted messenger(s) to the kings, my ancestors, in order to inquire about their well-being — heard from afar of the might of the gods Aššur, [Nabû], (and) Marduk. [Then, fear of (my) royal brilliance overwhelmed him and terror overcame him. He threw him (Iāmānī) in manacles and handcuffs, (in other words in) iron fetters, and they brought (him) the long journey to Assyria, into my presence.”

Battle of Eltekeh:

The Battle of Eltekeh—situated near modern‑day Rehovot in Israel—constitutes one of the more consequential engagements of Sennacherib’s western campaign in 701 BCE. In this encounter, the Neo‑Assyrian forces confronted and ultimately overcame a coalition composed of Egyptian troops and contingents associated with Meluḫḫa, mobilized in support of the rebellious cities of the southern Levant. The event is described in emphatic terms within Sennacherib’s royal inscriptions, which present the clash as a decisive affirmation of Assyrian military supremacy. As the king records:

“In the plain of the city Eltekeh, they sharpened their weapons while drawing up in battleline before me. With the support of (the god) Aššur, my lord, I fought with them and defeated them. In the thick of battle, I captured alive the Egyptian charioteers and princes (‘the sons of the kings’), together with the charioteers of the king of the land Meluḫḫa.” (Sennacherib 4, 44)

Scholars generally infer that the entities designated as “Meluhha” and “Magan” in the royal inscriptions of the Assyrian kings refer to two relatively small polities or city-states situated along the eastern or southern frontiers of pharaonic Egypt.