Thank you for your request for research Sayak. I took your request seriously(I will respond to your later request also in due course, however you may find in these series of posts some of those points are indirectly addressed). Ironically, contrary to what you said (1) was far easier than (2) The latter proved to be a lot harder, hence why it has taken me a few days to compile. I had to search for a lot of reliable references, then cross-reference those references and then look through available sources of Mahabharata, Puranas, Vedas and Brahmanas. I enjoyed the exercise though, because it also increased my own knowledge on the subject and further strengthened my convictions.
(1) The journals and academic articles documenting the discovery of the submerged Dwaraka
Here you go
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.484.553&rep=rep1&type=pdf
http://mahabharata-resources.org/ola/New_Trend_Indian_Art_Archaeol_1992_2_479.pdf
I will just excerpt the concluding lines of the study:
From the foregoing conclusion, it would be a reasonable to conclude that on the basis of archaeological evidence so far adduced, as a result of underwater explorations and excavations, the existence and subsequent submergence of Dwaraka of Mahabharara era is a reality and not a myth
I do not need to offer much description or commentary here, your request was just links to archaeological journals and papers. So I will leave it for your own reading and let you draw your own conclusions.
(2)
As I explained earlier the Saraswati river identification with the Ghaggar-Hakkar river of India is unambiguous. Its course and location is described explicitly in the Rig Veda, Mahabharata, Brahmanas, Dharma shastra and sutras and other Indian literature. I will begin by first describing, and where I can cite directly from the primary sources, the descriptions pertaining to Saraswati. Then I will show you the geological evidence.
Textual Evidence
Early Vedic Period: Rig Veda
The Saraswati river is the most praised river in the Rig Veda. There are 60+ hymns that mention Saraswati directly and several hymns directly addressed to Saraswati. As the Saraswati river was the largest river in Veidc times, along which the Vedic people resided, it became the main sustenance of its people, and the along the banks of which Vedic Rishis composed their mantras and the cattle grazed, the Saraswati thus came onto to acquire divinity as a Goddess of inspiration, knowledge, speech and the the provider of milk, ghee and as mother because she nourished the people.
Hymns from Rig Veda:
RV.3.23-4:
4 He set thee in the earth's most lovely station, in Iḷā's place, in days of fair bright weather. On man, on Āpayā, Agni! on the rivers Dṛṣadvati, Sarasvatī, shine richly.
RV 6.96.1-6:
1. I SING a lofty song, for she is mightiest, most divine of Streams.
Sarasvatī will I exalt with hymns and lauds, and, O Vasiṣṭha, Heaven and Earth.
2 When in the fulness of their strength the Pūrus dwell, Beauteous One, on thy two grassy banks,
Favour us thou who hast the Maruts for thy friends: stir up the bounty of our chiefs.
3 So may Sarasvatī auspicious send good luck; she, rich in spoil, is never niggardly in thought,
When praised in jamadagni's way and lauded as Vasiṣṭha lauds.
4 We call upon Sarasvān, as unmarried men who long for wives,
As liberal men who yearn for sons.
5 Be thou our kind protector, O Sarasvān, with those waves of thine
Laden with sweets and dropping oil.
6 May we enjoy Sarasvān's breast, all-beautiful, that swells with streams,
May we gain food and progeny.
RV 6.61.2-14:
2 She with her might, like one who digs for lotus-stems, hath burst with her strong waves the ridges of the hills.
Let us invite with songs and holy hymns for help Sarasvatī who slayeth the Paravatas.
3 Thou castest down, Sarasvatī, those who scorned the Gods, the brood of every Bṛsaya skilled in magic arts.
Thou hast discovered rivers for the tribes of men, and, rich in wealth! made poison flow away from them.
4 May the divine Sarasvatī, rich in her wealth, protect us well,
Furthering all our thoughts with might
5 Whoso, divine Sarasvatī, invokes thee where the prize is set,
Like Indra when he smites the foe.
6 Aid us, divine Sarasvad, thou who art strong in wealth and power
Like Pūṣan, give us opulence.
7 Yea, this divine Sarasvatī, terrible with her golden path,
Foe-slayer, claims our eulogy.
8 Whose limitless unbroken flood, swift-moving with a rapid rush,
Comes onward with tempestuous roar.
9 She hath spread us beyond all foes, beyond her Sisters, Holy One,
As Sūrya spreadeth out the days.
10 Yea, she most dear amid dear stream, Seven-sistered, graciously inclined,
Sarasvatī hath earned our praise.
11 Guard us from hate Sarasvatī, she who hath filled the realms of earth,
And that wide tract, the firmament!
12 Seven-sistered, sprung from threefold source, the Five Tribes' prosperer, she must be
Invoked in every deed of might.
13 Marked out by majesty among the Mighty Ones, in glory swifter than the other rapid Streams,
Created vast for victory like a chariot, Sarasvatī must be extolled by every sage.
14 Guide us, Sarasvatī, to glorious treasure: refuse us not thy milk, nor spurn us from thee.
Gladly accept our friendship and obedience: let us not go from thee to distant countries.
RV 7.36.6:
6 Coming together, glorious, loudly roaring - Sarasvatī, Mother of Floods, the seventh-
With copious milk, with fair streams, strongly flowing, full swelling with the volume of their water
RV 7.95-1-2:
1. THIS stream Sarasvatī with fostering current comes forth, our sure defence, our (ayus)forts.
As on a car, the flood flows on, surpassing in majesty and might all other waters.
2 Pure in her course from mountains to the ocean, alone of streams Sarasvatī hath listened.
RV 8.21.18:
17 Indra or blest Sarasvatī alone bestows such wealth, treasure so great, or thou,
O Citra, on the worshipper.
18 Citra is King, and only kinglings are the rest who dwell beside Sarasvatī.
He, like Parjanya with his rain, hath spread himself with thousand, yea, with myriad gifts.
RV 10.64.9:
Let the great Streams come hither with their mighty help, Sindhu, Sarasvatī, and Sarayu with waves.
Ye Goddess Floods, ye Mothers, animating all, promise us water rich in fatness and in balm
RV 10.75.1-9:
1. THE singer, O ye Waters in Vivasvān's place, shall tell your grandeur forth that is beyond compare.
The Rivers have come forward triply, seven and seven. Sindhu in might surpasses all the streams that flow.
2 Varuṇa cut the channels for thy forward course, O Sindhu, when thou rannest on to win the race.
Thou speedest o’er precipitous ridges of the earth, when thou art Lord and Leader of these moving floods.
3 His roar is lifted up to heaven above the earth: he puts forth endless vigour with a flash of light.
Like floods of rain that fall in thunder from the cloud, so Sindhu rushes on bellowing like a bull.
4 Like mothers to their calves, like milch kine with their milk, so, Sindhu, unto thee the roaring rivers run.
Thou leadest as a warrior king thine army's wings what time thou comest in the van of these swift streams.
5 Favour ye this my laud, O Gan!gā, Yamunā, O Sutudri, Paruṣṇī and Sarasvatī:
With Asikni, Vitasta, O Marudvrdha, O Ārjīkīya with Susoma hear my call.
6 First with Trstama thou art eager to flow forth, with Rasā, and Susartu, and with Svetya here,
With Kubha; and with these, Sindhu and Mehatnu, thou seekest in thy course Krumu and Gomati.
7 Flashing and whitely-gleaming in her mightiness, she moves along her ample volumes through the realms,
Most active of the active, Sindhu unrestrained, like to a dappled mare, beautiful, fair to see.
8 Rich in good steeds is Sindhu, rich in cars and robes, rich in gold, nobly-fashioned, rich in ample wealth.
Blest Silamavati and young Urnavati invest themselves with raiment rich in store of sweets.
9 Sindhu hath yoked her car, light-rolling, drawn by steeds, and with that car shall she win booty in this fight.
So have I praised its power, mighty and unrestrained, of independent glory, roaring as it runs.
Main appellations:
"Burst through her with strong waves through ridges of the hill"
"Pure in her course from mountains to the sea"
"Seven-sisteted"
"Mightiest of rivers"
"Surpassing in might and majesty all other rivers"
"Swift moving with a rapid push, coming forth with a a tempestuous roar"
" glorious, loudly roaring - Sarasvatī, Mother of Floods, the seventh-, strongly flowing, full swelling with the volume of their water"
Summary:
1. Saraswati is a thriving river in India
2. Saraswati is the mightiest, biggest and greatest river, flowing directly from the mountains into the sea
3. The Saraswati river is the mother of 7 others rivers or tributaries which join into her and swell her up
4. Along the banks of the Saraswati, the settlements of many kingdoms, some mentioned by name Purus are located
5. The Sarwasti river is located in between the Yamuna and the Sutej(described in order from East to West, Ganga, Yamuna, Saraswati, Sutlet.... Sindhu)
6. The Saraswati is the main sustenance of the Vedic people
7. Although in the early books the Saraswati is the most important river, by the latest book, book 10 the Saraswati is replaced by Sindu as the most important.